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Edit File : load.php \| Size : 55.12 KB
<?php /** * These functions are needed to load WordPress. * * @package WordPress / /* * Returns the HTTP protocol sent by the server. * * @since 4.4.0 * * @return string The HTTP protocol. Default: HTTP/1.0. / function wp_get_server_protocol() { $protocol = isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : ''; if ( ! in_array( $protocol, array( 'HTTP/1.1', 'HTTP/2', 'HTTP/2.0', 'HTTP/3' ), true ) ) { $protocol = 'HTTP/1.0'; } return $protocol; } /* * Fixes `$_SERVER` variables for various setups. * * @since 3.0.0 * @access private * * @global string $PHP_SELF The filename of the currently executing script, * relative to the document root. / function wp_fix_server_vars() { global $PHP_SELF; $default_server_values = array( 'SERVER_SOFTWARE' => '', 'REQUEST_URI' => '', ); $_SERVER = array_merge( $default_server_values, $_SERVER ); // Fix for IIS when running with PHP ISAPI. if ( empty( $_SERVER['REQUEST_URI'] ) \|\| ( 'cgi-fcgi' !== PHP_SAPI && preg_match( '/^Microsoft-IIS\//', $_SERVER['SERVER_SOFTWARE'] ) ) ) { if ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) ) { // IIS Mod-Rewrite. $_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_ORIGINAL_URL']; } elseif ( isset( $_SERVER['HTTP_X_REWRITE_URL'] ) ) { // IIS Isapi_Rewrite. $_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_REWRITE_URL']; } else { // Use ORIG_PATH_INFO if there is no PATH_INFO. if ( ! isset( $_SERVER['PATH_INFO'] ) && isset( $_SERVER['ORIG_PATH_INFO'] ) ) { $_SERVER['PATH_INFO'] = $_SERVER['ORIG_PATH_INFO']; } // Some IIS + PHP configurations put the script-name in the path-info (no need to append it twice). if ( isset( $_SERVER['PATH_INFO'] ) ) { if ( $_SERVER['PATH_INFO'] === $_SERVER['SCRIPT_NAME'] ) { $_SERVER['REQUEST_URI'] = $_SERVER['PATH_INFO']; } else { $_SERVER['REQUEST_URI'] = $_SERVER['SCRIPT_NAME'] . $_SERVER['PATH_INFO']; } } // Append the query string if it exists and isn't null. if ( ! empty( $_SERVER['QUERY_STRING'] ) ) { $_SERVER['REQUEST_URI'] .= '?' . $_SERVER['QUERY_STRING']; } } } // Fix for PHP as CGI hosts that set SCRIPT_FILENAME to something ending in php.cgi for all requests. if ( isset( $_SERVER['SCRIPT_FILENAME'] ) && str_ends_with( $_SERVER['SCRIPT_FILENAME'], 'php.cgi' ) ) { $_SERVER['SCRIPT_FILENAME'] = $_SERVER['PATH_TRANSLATED']; } // Fix for Dreamhost and other PHP as CGI hosts. if ( isset( $_SERVER['SCRIPT_NAME'] ) && str_contains( $_SERVER['SCRIPT_NAME'], 'php.cgi' ) ) { unset( $_SERVER['PATH_INFO'] ); } // Fix empty PHP_SELF. $PHP_SELF = $_SERVER['PHP_SELF']; if ( empty( $PHP_SELF ) ) { $_SERVER['PHP_SELF'] = preg_replace( '/(\?.)?$/', '', $_SERVER['REQUEST_URI'] ); $PHP_SELF = $_SERVER['PHP_SELF']; } wp_populate_basic_auth_from_authorization_header(); } /** * Populates the Basic Auth server details from the Authorization header. * * Some servers running in CGI or FastCGI mode don't pass the Authorization * header on to WordPress. If it's been rewritten to the `HTTP_AUTHORIZATION` header, * fill in the proper $_SERVER variables instead. * * @since 5.6.0 / function wp_populate_basic_auth_from_authorization_header() { // If we don't have anything to pull from, return early. if ( ! isset( $_SERVER['HTTP_AUTHORIZATION'] ) && ! isset( $_SERVER['REDIRECT_HTTP_AUTHORIZATION'] ) ) { return; } // If either PHP_AUTH key is already set, do nothing. if ( isset( $_SERVER['PHP_AUTH_USER'] ) \|\| isset( $_SERVER['PHP_AUTH_PW'] ) ) { return; } // From our prior conditional, one of these must be set. $header = isset( $_SERVER['HTTP_AUTHORIZATION'] ) ? $_SERVER['HTTP_AUTHORIZATION'] : $_SERVER['REDIRECT_HTTP_AUTHORIZATION']; // Test to make sure the pattern matches expected. if ( ! preg_match( '%^Basic [a-z\d/+]={0,2}$%i', $header ) ) { return; } // Removing `Basic ` the token would start six characters in. $token = substr( $header, 6 ); $userpass = base64_decode( $token ); // There must be at least one colon in the string. if ( ! str_contains( $userpass, ':' ) ) { return; } list( $user, $pass ) = explode( ':', $userpass, 2 ); // Now shove them in the proper keys where we're expecting later on. $_SERVER['PHP_AUTH_USER'] = $user; $_SERVER['PHP_AUTH_PW'] = $pass; } /** * Checks for the required PHP version, and the mysqli extension or * a database drop-in. * * Dies if requirements are not met. * * @since 3.0.0 * @access private * * @global string $required_php_version The required PHP version string. * @global string[] $required_php_extensions The names of required PHP extensions. * @global string $wp_version The WordPress version string. / function wp_check_php_mysql_versions() { global $required_php_version, $required_php_extensions, $wp_version; $php_version = PHP_VERSION; if ( version_compare( $required_php_version, $php_version, '>' ) ) { $protocol = wp_get_server_protocol(); header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 ); header( 'Content-Type: text/html; charset=utf-8' ); printf( 'Your server is running PHP version %1$s but WordPress %2$s requires at least %3$s.', $php_version, $wp_version, $required_php_version ); exit( 1 ); } $missing_extensions = array(); if ( isset( $required_php_extensions ) && is_array( $required_php_extensions ) ) { foreach ( $required_php_extensions as $extension ) { if ( extension_loaded( $extension ) ) { continue; } $missing_extensions[] = sprintf( 'WordPress %1$s requires the <code>%2$s</code> PHP extension.', $wp_version, $extension ); } } if ( count( $missing_extensions ) > 0 ) { $protocol = wp_get_server_protocol(); header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 ); header( 'Content-Type: text/html; charset=utf-8' ); echo implode( '<br>', $missing_extensions ); exit( 1 ); } // This runs before default constants are defined, so we can't assume WP_CONTENT_DIR is set yet. $wp_content_dir = defined( 'WP_CONTENT_DIR' ) ? WP_CONTENT_DIR : ABSPATH . 'wp-content'; if ( ! function_exists( 'mysqli_connect' ) && ! file_exists( $wp_content_dir . '/db.php' ) ) { require_once ABSPATH . WPINC . '/functions.php'; wp_load_translations_early(); $message = '<p>' . __( 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' ) . "</p>\n"; $message .= '<p>' . sprintf( / translators: %s: mysqli. / __( 'Please check that the %s PHP extension is installed and enabled.' ), '<code>mysqli</code>' ) . "</p>\n"; $message .= '<p>' . sprintf( / translators: %s: Support forums URL. / __( 'If you are unsure what these terms mean you should probably contact your host. If you still need help you can always visit the <a href="%s">WordPress support forums</a>.' ), __( 'https://wordpress.org/support/forums/' ) ) . "</p>\n"; $args = array( 'exit' => false, 'code' => 'mysql_not_found', ); wp_die( $message, __( 'Requirements Not Met' ), $args ); exit( 1 ); } } /* * Retrieves the current environment type. * * The type can be set via the `WP_ENVIRONMENT_TYPE` global system variable, * or a constant of the same name. * * Possible values are 'local', 'development', 'staging', and 'production'. * If not set, the type defaults to 'production'. * * @since 5.5.0 * @since 5.5.1 Added the 'local' type. * @since 5.5.1 Removed the ability to alter the list of types. * * @return string The current environment type. / function wp_get_environment_type() { static $current_env = ''; if ( ! defined( 'WP_RUN_CORE_TESTS' ) && $current_env ) { return $current_env; } $wp_environments = array( 'local', 'development', 'staging', 'production', ); // Add a note about the deprecated WP_ENVIRONMENT_TYPES constant. if ( defined( 'WP_ENVIRONMENT_TYPES' ) && function_exists( '_deprecated_argument' ) ) { if ( function_exists( '__' ) ) { / translators: %s: WP_ENVIRONMENT_TYPES / $message = sprintf( __( 'The %s constant is no longer supported.' ), 'WP_ENVIRONMENT_TYPES' ); } else { $message = sprintf( 'The %s constant is no longer supported.', 'WP_ENVIRONMENT_TYPES' ); } _deprecated_argument( 'define()', '5.5.1', $message ); } // Check if the environment variable has been set, if `getenv` is available on the system. if ( function_exists( 'getenv' ) ) { $has_env = getenv( 'WP_ENVIRONMENT_TYPE' ); if ( false !== $has_env ) { $current_env = $has_env; } } // Fetch the environment from a constant, this overrides the global system variable. if ( defined( 'WP_ENVIRONMENT_TYPE' ) && WP_ENVIRONMENT_TYPE ) { $current_env = WP_ENVIRONMENT_TYPE; } // Make sure the environment is an allowed one, and not accidentally set to an invalid value. if ( ! in_array( $current_env, $wp_environments, true ) ) { $current_env = 'production'; } return $current_env; } /* * Retrieves the current development mode. * * The development mode affects how certain parts of the WordPress application behave, * which is relevant when developing for WordPress. * * Development mode can be set via the `WP_DEVELOPMENT_MODE` constant in `wp-config.php`. * Possible values are 'core', 'plugin', 'theme', 'all', or an empty string to disable * development mode. 'all' is a special value to signify that all three development modes * ('core', 'plugin', and 'theme') are enabled. * * Development mode is considered separately from `WP_DEBUG` and wp_get_environment_type(). * It does not affect debugging output, but rather functional nuances in WordPress. * * This function retrieves the currently set development mode value. To check whether * a specific development mode is enabled, use wp_is_development_mode(). * * @since 6.3.0 * * @return string The current development mode. / function wp_get_development_mode() { static $current_mode = null; if ( ! defined( 'WP_RUN_CORE_TESTS' ) && null !== $current_mode ) { return $current_mode; } $development_mode = WP_DEVELOPMENT_MODE; // Exclusively for core tests, rely on the `$_wp_tests_development_mode` global. if ( defined( 'WP_RUN_CORE_TESTS' ) && isset( $GLOBALS['_wp_tests_development_mode'] ) ) { $development_mode = $GLOBALS['_wp_tests_development_mode']; } $valid_modes = array( 'core', 'plugin', 'theme', 'all', '', ); if ( ! in_array( $development_mode, $valid_modes, true ) ) { $development_mode = ''; } $current_mode = $development_mode; return $current_mode; } /* * Checks whether the site is in the given development mode. * * @since 6.3.0 * * @param string $mode Development mode to check for. Either 'core', 'plugin', 'theme', or 'all'. * @return bool True if the given mode is covered by the current development mode, false otherwise. / function wp_is_development_mode( $mode ) { $current_mode = wp_get_development_mode(); if ( empty( $current_mode ) ) { return false; } // Return true if the current mode encompasses all modes. if ( 'all' === $current_mode ) { return true; } // Return true if the current mode is the given mode. return $mode === $current_mode; } /* * Ensures all of WordPress is not loaded when handling a favicon.ico request. * * Instead, send the headers for a zero-length favicon and bail. * * @since 3.0.0 * @deprecated 5.4.0 Deprecated in favor of do_favicon(). / function wp_favicon_request() { if ( '/favicon.ico' === $_SERVER['REQUEST_URI'] ) { header( 'Content-Type: image/vnd.microsoft.icon' ); exit; } } /* * Dies with a maintenance message when conditions are met. * * The default message can be replaced by using a drop-in (maintenance.php in * the wp-content directory). * * @since 3.0.0 * @access private / function wp_maintenance() { // Return if maintenance mode is disabled. if ( ! wp_is_maintenance_mode() ) { return; } if ( file_exists( WP_CONTENT_DIR . '/maintenance.php' ) ) { require_once WP_CONTENT_DIR . '/maintenance.php'; die(); } require_once ABSPATH . WPINC . '/functions.php'; wp_load_translations_early(); header( 'Retry-After: 600' ); wp_die( __( 'Briefly unavailable for scheduled maintenance. Check back in a minute.' ), __( 'Maintenance' ), 503 ); } /* * Checks if maintenance mode is enabled. * * Checks for a file in the WordPress root directory named ".maintenance". * This file will contain the variable $upgrading, set to the time the file * was created. If the file was created less than 10 minutes ago, WordPress * is in maintenance mode. * * @since 5.5.0 * * @global int $upgrading The Unix timestamp marking when upgrading WordPress began. * * @return bool True if maintenance mode is enabled, false otherwise. / function wp_is_maintenance_mode() { global $upgrading; if ( ! file_exists( ABSPATH . '.maintenance' ) \|\| wp_installing() ) { return false; } require ABSPATH . '.maintenance'; // If the $upgrading timestamp is older than 10 minutes, consider maintenance over. if ( ( time() - $upgrading ) >= 10 MINUTE_IN_SECONDS ) { return false; } // Don't enable maintenance mode while scraping for fatal errors. if ( is_int( $upgrading ) && isset( $_REQUEST['wp_scrape_key'], $_REQUEST['wp_scrape_nonce'] ) ) { $key = stripslashes( $_REQUEST['wp_scrape_key'] ); $nonce = stripslashes( $_REQUEST['wp_scrape_nonce'] ); if ( md5( $upgrading ) === $key && (int) $nonce === $upgrading ) { return false; } } /** * Filters whether to enable maintenance mode. * * This filter runs before it can be used by plugins. It is designed for * non-web runtimes. If this filter returns true, maintenance mode will be * active and the request will end. If false, the request will be allowed to * continue processing even if maintenance mode should be active. * * @since 4.6.0 * * @param bool $enable_checks Whether to enable maintenance mode. Default true. * @param int $upgrading The timestamp set in the .maintenance file. / if ( ! apply_filters( 'enable_maintenance_mode', true, $upgrading ) ) { return false; } return true; } /* * Gets the time elapsed so far during this PHP script. * * @since 5.8.0 * * @return float Seconds since the PHP script started. / function timer_float() { return microtime( true ) - $_SERVER['REQUEST_TIME_FLOAT']; } /* * Starts the WordPress micro-timer. * * @since 0.71 * @access private * * @global float $timestart Unix timestamp set at the beginning of the page load. * @see timer_stop() * * @return bool Always returns true. / function timer_start() { global $timestart; $timestart = microtime( true ); return true; } /* * Retrieves or displays the time from the page start to when function is called. * * @since 0.71 * * @global float $timestart Seconds from when timer_start() is called. * @global float $timeend Seconds from when function is called. * * @param int\|bool $display Whether to echo or return the results. Accepts 0\|false for return, * 1\|true for echo. Default 0\|false. * @param int $precision The number of digits from the right of the decimal to display. * Default 3. * @return string The "second.microsecond" finished time calculation. The number is formatted * for human consumption, both localized and rounded. / function timer_stop( $display = 0, $precision = 3 ) { global $timestart, $timeend; $timeend = microtime( true ); $timetotal = $timeend - $timestart; if ( function_exists( 'number_format_i18n' ) ) { $r = number_format_i18n( $timetotal, $precision ); } else { $r = number_format( $timetotal, $precision ); } if ( $display ) { echo $r; } return $r; } /* * Sets PHP error reporting based on WordPress debug settings. * * Uses three constants: `WP_DEBUG`, `WP_DEBUG_DISPLAY`, and `WP_DEBUG_LOG`. * All three can be defined in wp-config.php. By default, `WP_DEBUG` and * `WP_DEBUG_LOG` are set to false, and `WP_DEBUG_DISPLAY` is set to true. * * When `WP_DEBUG` is true, all PHP notices are reported. WordPress will also * display internal notices: when a deprecated WordPress function, function * argument, or file is used. Deprecated code may be removed from a later * version. * * It is strongly recommended that plugin and theme developers use `WP_DEBUG` * in their development environments. * * `WP_DEBUG_DISPLAY` and `WP_DEBUG_LOG` perform no function unless `WP_DEBUG` * is true. * * When `WP_DEBUG_DISPLAY` is true, WordPress will force errors to be displayed. * `WP_DEBUG_DISPLAY` defaults to true. Defining it as null prevents WordPress * from changing the global configuration setting. Defining `WP_DEBUG_DISPLAY` * as false will force errors to be hidden. * * When `WP_DEBUG_LOG` is true, errors will be logged to `wp-content/debug.log`. * When `WP_DEBUG_LOG` is a valid path, errors will be logged to the specified file. * * Errors are never displayed for XML-RPC, REST, `ms-files.php`, and Ajax requests. * * @since 3.0.0 * @since 5.1.0 `WP_DEBUG_LOG` can be a file path. * @access private / function wp_debug_mode() { /* * Filters whether to allow the debug mode check to occur. * * This filter runs before it can be used by plugins. It is designed for * non-web runtimes. Returning false causes the `WP_DEBUG` and related * constants to not be checked and the default PHP values for errors * will be used unless you take care to update them yourself. * * To use this filter you must define a `$wp_filter` global before * WordPress loads, usually in `wp-config.php`. * * Example: * * $GLOBALS['wp_filter'] = array( * 'enable_wp_debug_mode_checks' => array( * 10 => array( * array( * 'accepted_args' => 0, * 'function' => function() { * return false; * }, * ), * ), * ), * ); * * @since 4.6.0 * * @param bool $enable_debug_mode Whether to enable debug mode checks to occur. Default true. / if ( ! apply_filters( 'enable_wp_debug_mode_checks', true ) ) { return; } if ( WP_DEBUG ) { error_reporting( E_ALL ); if ( WP_DEBUG_DISPLAY ) { ini_set( 'display_errors', 1 ); } elseif ( null !== WP_DEBUG_DISPLAY ) { ini_set( 'display_errors', 0 ); } if ( in_array( strtolower( (string) WP_DEBUG_LOG ), array( 'true', '1' ), true ) ) { $log_path = WP_CONTENT_DIR . '/debug.log'; } elseif ( is_string( WP_DEBUG_LOG ) ) { $log_path = WP_DEBUG_LOG; } else { $log_path = false; } if ( $log_path ) { ini_set( 'log_errors', 1 ); ini_set( 'error_log', $log_path ); } } else { error_reporting( E_CORE_ERROR \| E_CORE_WARNING \| E_COMPILE_ERROR \| E_ERROR \| E_WARNING \| E_PARSE \| E_USER_ERROR \| E_USER_WARNING \| E_RECOVERABLE_ERROR ); } / * The 'REST_REQUEST' check here is optimistic as the constant is most * likely not set at this point even if it is in fact a REST request. / if ( defined( 'XMLRPC_REQUEST' ) \|\| defined( 'REST_REQUEST' ) \|\| defined( 'MS_FILES_REQUEST' ) \|\| ( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) \|\| wp_doing_ajax() \|\| wp_is_json_request() ) { ini_set( 'display_errors', 0 ); } } /* * Sets the location of the language directory. * * To set directory manually, define the `WP_LANG_DIR` constant * in wp-config.php. * * If the language directory exists within `WP_CONTENT_DIR`, it * is used. Otherwise the language directory is assumed to live * in `WPINC`. * * @since 3.0.0 * @access private / function wp_set_lang_dir() { if ( ! defined( 'WP_LANG_DIR' ) ) { if ( file_exists( WP_CONTENT_DIR . '/languages' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) \|\| ! @is_dir( ABSPATH . WPINC . '/languages' ) ) { /* * Server path of the language directory. * * No leading slash, no trailing slash, full path, not relative to ABSPATH * * @since 2.1.0 / define( 'WP_LANG_DIR', WP_CONTENT_DIR . '/languages' ); if ( ! defined( 'LANGDIR' ) ) { // Old static relative path maintained for limited backward compatibility - won't work in some cases. define( 'LANGDIR', 'wp-content/languages' ); } } else { /* * Server path of the language directory. * * No leading slash, no trailing slash, full path, not relative to `ABSPATH`. * * @since 2.1.0 / define( 'WP_LANG_DIR', ABSPATH . WPINC . '/languages' ); if ( ! defined( 'LANGDIR' ) ) { // Old relative path maintained for backward compatibility. define( 'LANGDIR', WPINC . '/languages' ); } } } } /* * Loads the database class file and instantiates the `$wpdb` global. * * @since 2.5.0 * * @global wpdb $wpdb WordPress database abstraction object. / function require_wp_db() { global $wpdb; require_once ABSPATH . WPINC . '/class-wpdb.php'; if ( file_exists( WP_CONTENT_DIR . '/db.php' ) ) { require_once WP_CONTENT_DIR . '/db.php'; } if ( isset( $wpdb ) ) { return; } $dbuser = defined( 'DB_USER' ) ? DB_USER : ''; $dbpassword = defined( 'DB_PASSWORD' ) ? DB_PASSWORD : ''; $dbname = defined( 'DB_NAME' ) ? DB_NAME : ''; $dbhost = defined( 'DB_HOST' ) ? DB_HOST : ''; $wpdb = new wpdb( $dbuser, $dbpassword, $dbname, $dbhost ); } /* * Sets the database table prefix and the format specifiers for database * table columns. * * Columns not listed here default to `%s`. * * @since 3.0.0 * @access private * * @global wpdb $wpdb WordPress database abstraction object. * @global string $table_prefix The database table prefix. / function wp_set_wpdb_vars() { global $wpdb, $table_prefix; if ( ! empty( $wpdb->error ) ) { dead_db(); } $wpdb->field_types = array( 'post_author' => '%d', 'post_parent' => '%d', 'menu_order' => '%d', 'term_id' => '%d', 'term_group' => '%d', 'term_taxonomy_id' => '%d', 'parent' => '%d', 'count' => '%d', 'object_id' => '%d', 'term_order' => '%d', 'ID' => '%d', 'comment_ID' => '%d', 'comment_post_ID' => '%d', 'comment_parent' => '%d', 'user_id' => '%d', 'link_id' => '%d', 'link_owner' => '%d', 'link_rating' => '%d', 'option_id' => '%d', 'blog_id' => '%d', 'meta_id' => '%d', 'post_id' => '%d', 'user_status' => '%d', 'umeta_id' => '%d', 'comment_karma' => '%d', 'comment_count' => '%d', // Multisite: 'active' => '%d', 'cat_id' => '%d', 'deleted' => '%d', 'lang_id' => '%d', 'mature' => '%d', 'public' => '%d', 'site_id' => '%d', 'spam' => '%d', ); $prefix = $wpdb->set_prefix( $table_prefix ); if ( is_wp_error( $prefix ) ) { wp_load_translations_early(); wp_die( sprintf( / translators: 1: $table_prefix, 2: wp-config.php / __( '<strong>Error:</strong> %1$s in %2$s can only contain numbers, letters, and underscores.' ), '<code>$table_prefix</code>', '<code>wp-config.php</code>' ) ); } } /* * Toggles `$_wp_using_ext_object_cache` on and off without directly * touching global. * * @since 3.7.0 * * @global bool $_wp_using_ext_object_cache * * @param bool $using Whether external object cache is being used. * @return bool The current 'using' setting. / function wp_using_ext_object_cache( $using = null ) { global $_wp_using_ext_object_cache; $current_using = $_wp_using_ext_object_cache; if ( null !== $using ) { $_wp_using_ext_object_cache = $using; } return $current_using; } /* * Starts the WordPress object cache. * * If an object-cache.php file exists in the wp-content directory, * it uses that drop-in as an external object cache. * * @since 3.0.0 * @access private * * @global array $wp_filter Stores all of the filters. / function wp_start_object_cache() { global $wp_filter; static $first_init = true; // Only perform the following checks once. /* * Filters whether to enable loading of the object-cache.php drop-in. * * This filter runs before it can be used by plugins. It is designed for non-web * runtimes. If false is returned, object-cache.php will never be loaded. * * @since 5.8.0 * * @param bool $enable_object_cache Whether to enable loading object-cache.php (if present). * Default true. / if ( $first_init && apply_filters( 'enable_loading_object_cache_dropin', true ) ) { if ( ! function_exists( 'wp_cache_init' ) ) { / * This is the normal situation. First-run of this function. No * caching backend has been loaded. * * We try to load a custom caching backend, and then, if it * results in a wp_cache_init() function existing, we note * that an external object cache is being used. / if ( file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) { require_once WP_CONTENT_DIR . '/object-cache.php'; if ( function_exists( 'wp_cache_init' ) ) { wp_using_ext_object_cache( true ); } // Re-initialize any hooks added manually by object-cache.php. if ( $wp_filter ) { $wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter ); } } } elseif ( ! wp_using_ext_object_cache() && file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) { / * Sometimes advanced-cache.php can load object-cache.php before * this function is run. This breaks the function_exists() check * above and can result in wp_using_ext_object_cache() returning * false when actually an external cache is in use. / wp_using_ext_object_cache( true ); } } if ( ! wp_using_ext_object_cache() ) { require_once ABSPATH . WPINC . '/cache.php'; } require_once ABSPATH . WPINC . '/cache-compat.php'; / * If cache supports reset, reset instead of init if already * initialized. Reset signals to the cache that global IDs * have changed and it may need to update keys and cleanup caches. / if ( ! $first_init && function_exists( 'wp_cache_switch_to_blog' ) ) { wp_cache_switch_to_blog( get_current_blog_id() ); } elseif ( function_exists( 'wp_cache_init' ) ) { wp_cache_init(); } if ( function_exists( 'wp_cache_add_global_groups' ) ) { wp_cache_add_global_groups( array( 'blog-details', 'blog-id-cache', 'blog-lookup', 'blog_meta', 'global-posts', 'image_editor', 'networks', 'network-queries', 'sites', 'site-details', 'site-options', 'site-queries', 'site-transient', 'theme_files', 'translation_files', 'rss', 'users', 'user-queries', 'user_meta', 'useremail', 'userlogins', 'userslugs', ) ); wp_cache_add_non_persistent_groups( array( 'counts', 'plugins', 'theme_json' ) ); } $first_init = false; } /* * Redirects to the installer if WordPress is not installed. * * Dies with an error message when Multisite is enabled. * * @since 3.0.0 * @access private / function wp_not_installed() { if ( is_blog_installed() \|\| wp_installing() ) { return; } nocache_headers(); if ( is_multisite() ) { wp_die( __( 'The site you have requested is not installed properly. Please contact the system administrator.' ) ); } require ABSPATH . WPINC . '/kses.php'; require ABSPATH . WPINC . '/pluggable.php'; $link = wp_guess_url() . '/wp-admin/install.php'; wp_redirect( $link ); die(); } /* * Retrieves an array of must-use plugin files. * * The default directory is wp-content/mu-plugins. To change the default * directory manually, define `WPMU_PLUGIN_DIR` and `WPMU_PLUGIN_URL` * in wp-config.php. * * @since 3.0.0 * @access private * * @return string[] Array of absolute paths of files to include. / function wp_get_mu_plugins() { $mu_plugins = array(); if ( ! is_dir( WPMU_PLUGIN_DIR ) ) { return $mu_plugins; } $dh = opendir( WPMU_PLUGIN_DIR ); if ( ! $dh ) { return $mu_plugins; } while ( ( $plugin = readdir( $dh ) ) !== false ) { if ( str_ends_with( $plugin, '.php' ) ) { $mu_plugins[] = WPMU_PLUGIN_DIR . '/' . $plugin; } } closedir( $dh ); sort( $mu_plugins ); return $mu_plugins; } /* * Retrieves an array of active and valid plugin files. * * While upgrading or installing WordPress, no plugins are returned. * * The default directory is `wp-content/plugins`. To change the default * directory manually, define `WP_PLUGIN_DIR` and `WP_PLUGIN_URL` * in `wp-config.php`. * * @since 3.0.0 * @access private * * @return string[] Array of paths to plugin files relative to the plugins directory. / function wp_get_active_and_valid_plugins() { $plugins = array(); $active_plugins = (array) get_option( 'active_plugins', array() ); // Check for hacks file if the option is enabled. if ( get_option( 'hack_file' ) && file_exists( ABSPATH . 'my-hacks.php' ) ) { _deprecated_file( 'my-hacks.php', '1.5.0' ); array_unshift( $plugins, ABSPATH . 'my-hacks.php' ); } if ( empty( $active_plugins ) \|\| wp_installing() ) { return $plugins; } $network_plugins = is_multisite() ? wp_get_active_network_plugins() : false; foreach ( $active_plugins as $plugin ) { if ( ! validate_file( $plugin ) // $plugin must validate as file. && str_ends_with( $plugin, '.php' ) // $plugin must end with '.php'. && file_exists( WP_PLUGIN_DIR . '/' . $plugin ) // $plugin must exist. // Not already included as a network plugin. && ( ! $network_plugins \|\| ! in_array( WP_PLUGIN_DIR . '/' . $plugin, $network_plugins, true ) ) ) { $plugins[] = WP_PLUGIN_DIR . '/' . $plugin; } } / * Remove plugins from the list of active plugins when we're on an endpoint * that should be protected against WSODs and the plugin is paused. / if ( wp_is_recovery_mode() ) { $plugins = wp_skip_paused_plugins( $plugins ); } return $plugins; } /* * Filters a given list of plugins, removing any paused plugins from it. * * @since 5.2.0 * * @global WP_Paused_Extensions_Storage $_paused_plugins * * @param string[] $plugins Array of absolute plugin main file paths. * @return string[] Filtered array of plugins, without any paused plugins. / function wp_skip_paused_plugins( array $plugins ) { $paused_plugins = wp_paused_plugins()->get_all(); if ( empty( $paused_plugins ) ) { return $plugins; } foreach ( $plugins as $index => $plugin ) { list( $plugin ) = explode( '/', plugin_basename( $plugin ) ); if ( array_key_exists( $plugin, $paused_plugins ) ) { unset( $plugins[ $index ] ); // Store list of paused plugins for displaying an admin notice. $GLOBALS['_paused_plugins'][ $plugin ] = $paused_plugins[ $plugin ]; } } return $plugins; } /* * Retrieves an array of active and valid themes. * * While upgrading or installing WordPress, no themes are returned. * * @since 5.1.0 * @access private * * @global string $pagenow The filename of the current screen. * @global string $wp_stylesheet_path Path to current theme's stylesheet directory. * @global string $wp_template_path Path to current theme's template directory. * * @return string[] Array of absolute paths to theme directories. / function wp_get_active_and_valid_themes() { global $pagenow, $wp_stylesheet_path, $wp_template_path; $themes = array(); if ( wp_installing() && 'wp-activate.php' !== $pagenow ) { return $themes; } if ( is_child_theme() ) { $themes[] = $wp_stylesheet_path; } $themes[] = $wp_template_path; / * Remove themes from the list of active themes when we're on an endpoint * that should be protected against WSODs and the theme is paused. / if ( wp_is_recovery_mode() ) { $themes = wp_skip_paused_themes( $themes ); // If no active and valid themes exist, skip loading themes. if ( empty( $themes ) ) { add_filter( 'wp_using_themes', '__return_false' ); } } return $themes; } /* * Filters a given list of themes, removing any paused themes from it. * * @since 5.2.0 * * @global WP_Paused_Extensions_Storage $_paused_themes * * @param string[] $themes Array of absolute theme directory paths. * @return string[] Filtered array of absolute paths to themes, without any paused themes. / function wp_skip_paused_themes( array $themes ) { $paused_themes = wp_paused_themes()->get_all(); if ( empty( $paused_themes ) ) { return $themes; } foreach ( $themes as $index => $theme ) { $theme = basename( $theme ); if ( array_key_exists( $theme, $paused_themes ) ) { unset( $themes[ $index ] ); // Store list of paused themes for displaying an admin notice. $GLOBALS['_paused_themes'][ $theme ] = $paused_themes[ $theme ]; } } return $themes; } /* * Determines whether WordPress is in Recovery Mode. * * In this mode, plugins or themes that cause WSODs will be paused. * * @since 5.2.0 * * @return bool / function wp_is_recovery_mode() { return wp_recovery_mode()->is_active(); } /* * Determines whether we are currently on an endpoint that should be protected against WSODs. * * @since 5.2.0 * * @global string $pagenow The filename of the current screen. * * @return bool True if the current endpoint should be protected. / function is_protected_endpoint() { // Protect login pages. if ( isset( $GLOBALS['pagenow'] ) && 'wp-login.php' === $GLOBALS['pagenow'] ) { return true; } // Protect the admin backend. if ( is_admin() && ! wp_doing_ajax() ) { return true; } // Protect Ajax actions that could help resolve a fatal error should be available. if ( is_protected_ajax_action() ) { return true; } /* * Filters whether the current request is against a protected endpoint. * * This filter is only fired when an endpoint is requested which is not already protected by * WordPress core. As such, it exclusively allows providing further protected endpoints in * addition to the admin backend, login pages and protected Ajax actions. * * @since 5.2.0 * * @param bool $is_protected_endpoint Whether the currently requested endpoint is protected. * Default false. / return (bool) apply_filters( 'is_protected_endpoint', false ); } /* * Determines whether we are currently handling an Ajax action that should be protected against WSODs. * * @since 5.2.0 * * @return bool True if the current Ajax action should be protected. / function is_protected_ajax_action() { if ( ! wp_doing_ajax() ) { return false; } if ( ! isset( $_REQUEST['action'] ) ) { return false; } $actions_to_protect = array( 'edit-theme-plugin-file', // Saving changes in the core code editor. 'heartbeat', // Keep the heart beating. 'install-plugin', // Installing a new plugin. 'install-theme', // Installing a new theme. 'search-plugins', // Searching in the list of plugins. 'search-install-plugins', // Searching for a plugin in the plugin install screen. 'update-plugin', // Update an existing plugin. 'update-theme', // Update an existing theme. 'activate-plugin', // Activating an existing plugin. ); /* * Filters the array of protected Ajax actions. * * This filter is only fired when doing Ajax and the Ajax request has an 'action' property. * * @since 5.2.0 * * @param string[] $actions_to_protect Array of strings with Ajax actions to protect. / $actions_to_protect = (array) apply_filters( 'wp_protected_ajax_actions', $actions_to_protect ); if ( ! in_array( $_REQUEST['action'], $actions_to_protect, true ) ) { return false; } return true; } /* * Sets internal encoding. * * In most cases the default internal encoding is latin1, which is * of no use, since we want to use the `mb_` functions for `utf-8` strings. * * @since 3.0.0 * @access private / function wp_set_internal_encoding() { if ( function_exists( 'mb_internal_encoding' ) ) { $charset = get_option( 'blog_charset' ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged if ( ! $charset \|\| ! @mb_internal_encoding( $charset ) ) { mb_internal_encoding( 'UTF-8' ); } } } /* * Adds magic quotes to `$_GET`, `$_POST`, `$_COOKIE`, and `$_SERVER`. * * Also forces `$_REQUEST` to be `$_GET + $_POST`. If `$_SERVER`, * `$_COOKIE`, or `$_ENV` are needed, use those superglobals directly. * * @since 3.0.0 * @access private / function wp_magic_quotes() { // Escape with wpdb. $_GET = add_magic_quotes( $_GET ); $_POST = add_magic_quotes( $_POST ); $_COOKIE = add_magic_quotes( $_COOKIE ); $_SERVER = add_magic_quotes( $_SERVER ); // Force REQUEST to be GET + POST. $_REQUEST = array_merge( $_GET, $_POST ); } /* * Runs just before PHP shuts down execution. * * @since 1.2.0 * @access private / function shutdown_action_hook() { /* * Fires just before PHP shuts down execution. * * @since 1.2.0 / do_action( 'shutdown' ); wp_cache_close(); } /* * Clones an object. * * @since 2.7.0 * @deprecated 3.2.0 * * @param object $input_object The object to clone. * @return object The cloned object. / function wp_clone( $input_object ) { // Use parens for clone to accommodate PHP 4. See #17880. return clone( $input_object ); } /* * Determines whether the current request is for the login screen. * * @since 6.1.0 * * @see wp_login_url() * * @return bool True if inside WordPress login screen, false otherwise. / function is_login() { return false !== stripos( wp_login_url(), $_SERVER['SCRIPT_NAME'] ); } /* * Determines whether the current request is for an administrative interface page. * * Does not check if the user is an administrator; use current_user_can() * for checking roles and capabilities. * * For more information on this and similar theme functions, check out * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ * Conditional Tags} article in the Theme Developer Handbook. * * @since 1.5.1 * * @global WP_Screen $current_screen WordPress current screen object. * * @return bool True if inside WordPress administration interface, false otherwise. / function is_admin() { if ( isset( $GLOBALS['current_screen'] ) ) { return $GLOBALS['current_screen']->in_admin(); } elseif ( defined( 'WP_ADMIN' ) ) { return WP_ADMIN; } return false; } /* * Determines whether the current request is for a site's administrative interface. * * e.g. `/wp-admin/` * * Does not check if the user is an administrator; use current_user_can() * for checking roles and capabilities. * * @since 3.1.0 * * @global WP_Screen $current_screen WordPress current screen object. * * @return bool True if inside WordPress site administration pages. / function is_blog_admin() { if ( isset( $GLOBALS['current_screen'] ) ) { return $GLOBALS['current_screen']->in_admin( 'site' ); } elseif ( defined( 'WP_BLOG_ADMIN' ) ) { return WP_BLOG_ADMIN; } return false; } /* * Determines whether the current request is for the network administrative interface. * * e.g. `/wp-admin/network/` * * Does not check if the user is an administrator; use current_user_can() * for checking roles and capabilities. * * Does not check if the site is a Multisite network; use is_multisite() * for checking if Multisite is enabled. * * @since 3.1.0 * * @global WP_Screen $current_screen WordPress current screen object. * * @return bool True if inside WordPress network administration pages. / function is_network_admin() { if ( isset( $GLOBALS['current_screen'] ) ) { return $GLOBALS['current_screen']->in_admin( 'network' ); } elseif ( defined( 'WP_NETWORK_ADMIN' ) ) { return WP_NETWORK_ADMIN; } return false; } /* * Determines whether the current request is for a user admin screen. * * e.g. `/wp-admin/user/` * * Does not check if the user is an administrator; use current_user_can() * for checking roles and capabilities. * * @since 3.1.0 * * @global WP_Screen $current_screen WordPress current screen object. * * @return bool True if inside WordPress user administration pages. / function is_user_admin() { if ( isset( $GLOBALS['current_screen'] ) ) { return $GLOBALS['current_screen']->in_admin( 'user' ); } elseif ( defined( 'WP_USER_ADMIN' ) ) { return WP_USER_ADMIN; } return false; } /* * Determines whether Multisite is enabled. * * @since 3.0.0 * * @return bool True if Multisite is enabled, false otherwise. / function is_multisite() { if ( defined( 'MULTISITE' ) ) { return MULTISITE; } if ( defined( 'SUBDOMAIN_INSTALL' ) \|\| defined( 'VHOST' ) \|\| defined( 'SUNRISE' ) ) { return true; } return false; } /* * Converts a value to non-negative integer. * * @since 2.5.0 * * @param mixed $maybeint Data you wish to have converted to a non-negative integer. * @return int A non-negative integer. / function absint( $maybeint ) { return abs( (int) $maybeint ); } /* * Retrieves the current site ID. * * @since 3.1.0 * * @global int $blog_id * * @return int Site ID. / function get_current_blog_id() { global $blog_id; return absint( $blog_id ); } /* * Retrieves the current network ID. * * @since 4.6.0 * * @return int The ID of the current network. / function get_current_network_id() { if ( ! is_multisite() ) { return 1; } $current_network = get_network(); if ( ! isset( $current_network->id ) ) { return get_main_network_id(); } return absint( $current_network->id ); } /* * Attempts an early load of translations. * * Used for errors encountered during the initial loading process, before * the locale has been properly detected and loaded. * * Designed for unusual load sequences (like setup-config.php) or for when * the script will then terminate with an error, otherwise there is a risk * that a file can be double-included. * * @since 3.4.0 * @access private * * @global WP_Textdomain_Registry $wp_textdomain_registry WordPress Textdomain Registry. * @global WP_Locale $wp_locale WordPress date and time locale object. / function wp_load_translations_early() { global $wp_textdomain_registry, $wp_locale; static $loaded = false; if ( $loaded ) { return; } $loaded = true; if ( function_exists( 'did_action' ) && did_action( 'init' ) ) { return; } // We need $wp_local_package. require ABSPATH . WPINC . '/version.php'; // Translation and localization. require_once ABSPATH . WPINC . '/pomo/mo.php'; require_once ABSPATH . WPINC . '/l10n/class-wp-translation-controller.php'; require_once ABSPATH . WPINC . '/l10n/class-wp-translations.php'; require_once ABSPATH . WPINC . '/l10n/class-wp-translation-file.php'; require_once ABSPATH . WPINC . '/l10n/class-wp-translation-file-mo.php'; require_once ABSPATH . WPINC . '/l10n/class-wp-translation-file-php.php'; require_once ABSPATH . WPINC . '/l10n.php'; require_once ABSPATH . WPINC . '/class-wp-textdomain-registry.php'; require_once ABSPATH . WPINC . '/class-wp-locale.php'; require_once ABSPATH . WPINC . '/class-wp-locale-switcher.php'; // General libraries. require_once ABSPATH . WPINC . '/plugin.php'; $locales = array(); $locations = array(); if ( ! $wp_textdomain_registry instanceof WP_Textdomain_Registry ) { $wp_textdomain_registry = new WP_Textdomain_Registry(); } while ( true ) { if ( defined( 'WPLANG' ) ) { if ( '' === WPLANG ) { break; } $locales[] = WPLANG; } if ( isset( $wp_local_package ) ) { $locales[] = $wp_local_package; } if ( ! $locales ) { break; } if ( defined( 'WP_LANG_DIR' ) && @is_dir( WP_LANG_DIR ) ) { $locations[] = WP_LANG_DIR; } if ( defined( 'WP_CONTENT_DIR' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) ) { $locations[] = WP_CONTENT_DIR . '/languages'; } if ( @is_dir( ABSPATH . 'wp-content/languages' ) ) { $locations[] = ABSPATH . 'wp-content/languages'; } if ( @is_dir( ABSPATH . WPINC . '/languages' ) ) { $locations[] = ABSPATH . WPINC . '/languages'; } if ( ! $locations ) { break; } $locations = array_unique( $locations ); foreach ( $locales as $locale ) { foreach ( $locations as $location ) { if ( file_exists( $location . '/' . $locale . '.mo' ) ) { load_textdomain( 'default', $location . '/' . $locale . '.mo', $locale ); if ( defined( 'WP_SETUP_CONFIG' ) && file_exists( $location . '/admin-' . $locale . '.mo' ) ) { load_textdomain( 'default', $location . '/admin-' . $locale . '.mo', $locale ); } break 2; } } } break; } $wp_locale = new WP_Locale(); } /* * Checks or sets whether WordPress is in "installation" mode. * * If the `WP_INSTALLING` constant is defined during the bootstrap, `wp_installing()` will default to `true`. * * @since 4.4.0 * * @param bool $is_installing Optional. True to set WP into Installing mode, false to turn Installing mode off. * Omit this parameter if you only want to fetch the current status. * @return bool True if WP is installing, otherwise false. When a `$is_installing` is passed, the function will * report whether WP was in installing mode prior to the change to `$is_installing`. / function wp_installing( $is_installing = null ) { static $installing = null; // Support for the `WP_INSTALLING` constant, defined before WP is loaded. if ( is_null( $installing ) ) { $installing = defined( 'WP_INSTALLING' ) && WP_INSTALLING; } if ( ! is_null( $is_installing ) ) { $old_installing = $installing; $installing = $is_installing; return (bool) $old_installing; } return (bool) $installing; } /* * Determines if SSL is used. * * @since 2.6.0 * @since 4.6.0 Moved from functions.php to load.php. * * @return bool True if SSL, otherwise false. / function is_ssl() { if ( isset( $_SERVER['HTTPS'] ) ) { if ( 'on' === strtolower( $_SERVER['HTTPS'] ) ) { return true; } if ( '1' === (string) $_SERVER['HTTPS'] ) { return true; } } elseif ( isset( $_SERVER['SERVER_PORT'] ) && ( '443' === (string) $_SERVER['SERVER_PORT'] ) ) { return true; } return false; } /* * Converts a shorthand byte value to an integer byte value. * * @since 2.3.0 * @since 4.6.0 Moved from media.php to load.php. * * @link https://www.php.net/manual/en/function.ini-get.php * @link https://www.php.net/manual/en/faq.using.php#faq.using.shorthandbytes * * @param string $value A (PHP ini) byte value, either shorthand or ordinary. * @return int An integer byte value. / function wp_convert_hr_to_bytes( $value ) { $value = strtolower( trim( $value ) ); $bytes = (int) $value; if ( str_contains( $value, 'g' ) ) { $bytes = GB_IN_BYTES; } elseif ( str_contains( $value, 'm' ) ) { $bytes = MB_IN_BYTES; } elseif ( str_contains( $value, 'k' ) ) { $bytes = KB_IN_BYTES; } // Deal with large (float) values which run into the maximum integer size. return min( $bytes, PHP_INT_MAX ); } /** * Determines whether a PHP ini value is changeable at runtime. * * @since 4.6.0 * * @link https://www.php.net/manual/en/function.ini-get-all.php * * @param string $setting The name of the ini setting to check. * @return bool True if the value is changeable at runtime. False otherwise. / function wp_is_ini_value_changeable( $setting ) { static $ini_all; if ( ! isset( $ini_all ) ) { $ini_all = false; // Sometimes `ini_get_all()` is disabled via the `disable_functions` option for "security purposes". if ( function_exists( 'ini_get_all' ) ) { $ini_all = ini_get_all(); } } if ( isset( $ini_all[ $setting ]['access'] ) && ( INI_ALL === $ini_all[ $setting ]['access'] \|\| INI_USER === $ini_all[ $setting ]['access'] ) ) { return true; } // If we were unable to retrieve the details, fail gracefully to assume it's changeable. if ( ! is_array( $ini_all ) ) { return true; } return false; } /* * Determines whether the current request is a WordPress Ajax request. * * @since 4.7.0 * * @return bool True if it's a WordPress Ajax request, false otherwise. / function wp_doing_ajax() { /* * Filters whether the current request is a WordPress Ajax request. * * @since 4.7.0 * * @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request. / return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX ); } /* * Determines whether the current request should use themes. * * @since 5.1.0 * * @return bool True if themes should be used, false otherwise. / function wp_using_themes() { /* * Filters whether the current request should use themes. * * @since 5.1.0 * * @param bool $wp_using_themes Whether the current request should use themes. / return apply_filters( 'wp_using_themes', defined( 'WP_USE_THEMES' ) && WP_USE_THEMES ); } /* * Determines whether the current request is a WordPress cron request. * * @since 4.8.0 * * @return bool True if it's a WordPress cron request, false otherwise. / function wp_doing_cron() { /* * Filters whether the current request is a WordPress cron request. * * @since 4.8.0 * * @param bool $wp_doing_cron Whether the current request is a WordPress cron request. / return apply_filters( 'wp_doing_cron', defined( 'DOING_CRON' ) && DOING_CRON ); } /* * Checks whether the given variable is a WordPress Error. * * Returns whether `$thing` is an instance of the `WP_Error` class. * * @since 2.1.0 * * @param mixed $thing The variable to check. * @return bool Whether the variable is an instance of WP_Error. / function is_wp_error( $thing ) { $is_wp_error = ( $thing instanceof WP_Error ); if ( $is_wp_error ) { /* * Fires when `is_wp_error()` is called and its parameter is an instance of `WP_Error`. * * @since 5.6.0 * * @param WP_Error $thing The error object passed to `is_wp_error()`. / do_action( 'is_wp_error_instance', $thing ); } return $is_wp_error; } /* * Determines whether file modifications are allowed. * * @since 4.8.0 * * @param string $context The usage context. * @return bool True if file modification is allowed, false otherwise. / function wp_is_file_mod_allowed( $context ) { /* * Filters whether file modifications are allowed. * * @since 4.8.0 * * @param bool $file_mod_allowed Whether file modifications are allowed. * @param string $context The usage context. / return apply_filters( 'file_mod_allowed', ! defined( 'DISALLOW_FILE_MODS' ) \|\| ! DISALLOW_FILE_MODS, $context ); } /* * Starts scraping edited file errors. * * @since 4.9.0 / function wp_start_scraping_edited_file_errors() { if ( ! isset( $_REQUEST['wp_scrape_key'] ) \|\| ! isset( $_REQUEST['wp_scrape_nonce'] ) ) { return; } $key = substr( sanitize_key( wp_unslash( $_REQUEST['wp_scrape_key'] ) ), 0, 32 ); $nonce = wp_unslash( $_REQUEST['wp_scrape_nonce'] ); if ( empty( $key ) \|\| empty( $nonce ) ) { return; } $transient = get_transient( 'scrape_key_' . $key ); if ( false === $transient ) { return; } if ( $transient !== $nonce ) { if ( ! headers_sent() ) { header( 'X-Robots-Tag: noindex' ); nocache_headers(); } echo "###### wp_scraping_result_start:$key ######"; echo wp_json_encode( array( 'code' => 'scrape_nonce_failure', 'message' => __( 'Scrape key check failed. Please try again.' ), ) ); echo "###### wp_scraping_result_end:$key ######"; die(); } if ( ! defined( 'WP_SANDBOX_SCRAPING' ) ) { define( 'WP_SANDBOX_SCRAPING', true ); } register_shutdown_function( 'wp_finalize_scraping_edited_file_errors', $key ); } /* * Finalizes scraping for edited file errors. * * @since 4.9.0 * * @param string $scrape_key Scrape key. / function wp_finalize_scraping_edited_file_errors( $scrape_key ) { $error = error_get_last(); echo "\n###### wp_scraping_result_start:$scrape_key ######\n"; if ( ! empty( $error ) && in_array( $error['type'], array( E_CORE_ERROR, E_COMPILE_ERROR, E_ERROR, E_PARSE, E_USER_ERROR, E_RECOVERABLE_ERROR ), true ) ) { $error = str_replace( ABSPATH, '', $error ); echo wp_json_encode( $error ); } else { echo wp_json_encode( true ); } echo "\n###### wp_scraping_result_end:$scrape_key ######\n"; } /* * Checks whether current request is a JSON request, or is expecting a JSON response. * * @since 5.0.0 * * @return bool True if `Accepts` or `Content-Type` headers contain `application/json`. * False otherwise. / function wp_is_json_request() { if ( isset( $_SERVER['HTTP_ACCEPT'] ) && wp_is_json_media_type( $_SERVER['HTTP_ACCEPT'] ) ) { return true; } if ( isset( $_SERVER['CONTENT_TYPE'] ) && wp_is_json_media_type( $_SERVER['CONTENT_TYPE'] ) ) { return true; } return false; } /* * Checks whether current request is a JSONP request, or is expecting a JSONP response. * * @since 5.2.0 * * @return bool True if JSONP request, false otherwise. / function wp_is_jsonp_request() { if ( ! isset( $_GET['_jsonp'] ) ) { return false; } if ( ! function_exists( 'wp_check_jsonp_callback' ) ) { require_once ABSPATH . WPINC . '/functions.php'; } $jsonp_callback = $_GET['_jsonp']; if ( ! wp_check_jsonp_callback( $jsonp_callback ) ) { return false; } /* This filter is documented in wp-includes/rest-api/class-wp-rest-server.php / $jsonp_enabled = apply_filters( 'rest_jsonp_enabled', true ); return $jsonp_enabled; } /* * Checks whether a string is a valid JSON Media Type. * * @since 5.6.0 * * @param string $media_type A Media Type string to check. * @return bool True if string is a valid JSON Media Type. / function wp_is_json_media_type( $media_type ) { static $cache = array(); if ( ! isset( $cache[ $media_type ] ) ) { $cache[ $media_type ] = (bool) preg_match( '/(^\|\s\|,)application\/([\w!#\$&-\^\.\+]+\+)?json(\+oembed)?($\|\s\|;\|,)/i', $media_type ); } return $cache[ $media_type ]; } /* * Checks whether current request is an XML request, or is expecting an XML response. * * @since 5.2.0 * * @return bool True if `Accepts` or `Content-Type` headers contain `text/xml` * or one of the related MIME types. False otherwise. / function wp_is_xml_request() { $accepted = array( 'text/xml', 'application/rss+xml', 'application/atom+xml', 'application/rdf+xml', 'text/xml+oembed', 'application/xml+oembed', ); if ( isset( $_SERVER['HTTP_ACCEPT'] ) ) { foreach ( $accepted as $type ) { if ( str_contains( $_SERVER['HTTP_ACCEPT'], $type ) ) { return true; } } } if ( isset( $_SERVER['CONTENT_TYPE'] ) && in_array( $_SERVER['CONTENT_TYPE'], $accepted, true ) ) { return true; } return false; } /* * Checks if this site is protected by HTTP Basic Auth. * * At the moment, this merely checks for the present of Basic Auth credentials. Therefore, calling * this function with a context different from the current context may give inaccurate results. * In a future release, this evaluation may be made more robust. * * Currently, this is only used by Application Passwords to prevent a conflict since it also utilizes * Basic Auth. * * @since 5.6.1 * * @global string $pagenow The filename of the current screen. * * @param string $context The context to check for protection. Accepts 'login', 'admin', and 'front'. * Defaults to the current context. * @return bool Whether the site is protected by Basic Auth. / function wp_is_site_protected_by_basic_auth( $context = '' ) { global $pagenow; if ( ! $context ) { if ( 'wp-login.php' === $pagenow ) { $context = 'login'; } elseif ( is_admin() ) { $context = 'admin'; } else { $context = 'front'; } } $is_protected = ! empty( $_SERVER['PHP_AUTH_USER'] ) \|\| ! empty( $_SERVER['PHP_AUTH_PW'] ); /* * Filters whether a site is protected by HTTP Basic Auth. * * @since 5.6.1 * * @param bool $is_protected Whether the site is protected by Basic Auth. * @param string $context The context to check for protection. One of 'login', 'admin', or 'front'. */ return apply_filters( 'wp_is_site_protected_by_basic_auth', $is_protected, $context ); } Back

Edit File : load.php | Size : 55.12 KB

<?php
/**
 * These functions are needed to load WordPress.
 *
 * @package WordPress
 */

/**
 * Returns the HTTP protocol sent by the server.
 *
 * @since 4.4.0
 *
 * @return string The HTTP protocol. Default: HTTP/1.0.
 */
function wp_get_server_protocol() {
	$protocol = isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : '';

if ( ! in_array( $protocol, array( 'HTTP/1.1', 'HTTP/2', 'HTTP/2.0', 'HTTP/3' ), true ) ) {
		$protocol = 'HTTP/1.0';
	}

return $protocol;
}

/**
 * Fixes `$_SERVER` variables for various setups.
 *
 * @since 3.0.0
 * @access private
 *
 * @global string $PHP_SELF The filename of the currently executing script,
 *                          relative to the document root.
 */
function wp_fix_server_vars() {
	global $PHP_SELF;

$default_server_values = array(
		'SERVER_SOFTWARE' => '',
		'REQUEST_URI'     => '',
	);

$_SERVER = array_merge( $default_server_values, $_SERVER );

// Fix for IIS when running with PHP ISAPI.
	if ( empty( $_SERVER['REQUEST_URI'] )
		|| ( 'cgi-fcgi' !== PHP_SAPI && preg_match( '/^Microsoft-IIS\//', $_SERVER['SERVER_SOFTWARE'] ) )
	) {

if ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) ) {
			// IIS Mod-Rewrite.
			$_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_ORIGINAL_URL'];
		} elseif ( isset( $_SERVER['HTTP_X_REWRITE_URL'] ) ) {
			// IIS Isapi_Rewrite.
			$_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_REWRITE_URL'];
		} else {
			// Use ORIG_PATH_INFO if there is no PATH_INFO.
			if ( ! isset( $_SERVER['PATH_INFO'] ) && isset( $_SERVER['ORIG_PATH_INFO'] ) ) {
				$_SERVER['PATH_INFO'] = $_SERVER['ORIG_PATH_INFO'];
			}

// Some IIS + PHP configurations put the script-name in the path-info (no need to append it twice).
			if ( isset( $_SERVER['PATH_INFO'] ) ) {
				if ( $_SERVER['PATH_INFO'] === $_SERVER['SCRIPT_NAME'] ) {
					$_SERVER['REQUEST_URI'] = $_SERVER['PATH_INFO'];
				} else {
					$_SERVER['REQUEST_URI'] = $_SERVER['SCRIPT_NAME'] . $_SERVER['PATH_INFO'];
				}
			}

// Append the query string if it exists and isn't null.
			if ( ! empty( $_SERVER['QUERY_STRING'] ) ) {
				$_SERVER['REQUEST_URI'] .= '?' . $_SERVER['QUERY_STRING'];
			}
		}
	}

// Fix for PHP as CGI hosts that set SCRIPT_FILENAME to something ending in php.cgi for all requests.
	if ( isset( $_SERVER['SCRIPT_FILENAME'] ) && str_ends_with( $_SERVER['SCRIPT_FILENAME'], 'php.cgi' ) ) {
		$_SERVER['SCRIPT_FILENAME'] = $_SERVER['PATH_TRANSLATED'];
	}

// Fix for Dreamhost and other PHP as CGI hosts.
	if ( isset( $_SERVER['SCRIPT_NAME'] ) && str_contains( $_SERVER['SCRIPT_NAME'], 'php.cgi' ) ) {
		unset( $_SERVER['PATH_INFO'] );
	}

// Fix empty PHP_SELF.
	$PHP_SELF = $_SERVER['PHP_SELF'];
	if ( empty( $PHP_SELF ) ) {
		$_SERVER['PHP_SELF'] = preg_replace( '/(\?.*)?$/', '', $_SERVER['REQUEST_URI'] );
		$PHP_SELF            = $_SERVER['PHP_SELF'];
	}

wp_populate_basic_auth_from_authorization_header();
}

/**
 * Populates the Basic Auth server details from the Authorization header.
 *
 * Some servers running in CGI or FastCGI mode don't pass the Authorization
 * header on to WordPress.  If it's been rewritten to the `HTTP_AUTHORIZATION` header,
 * fill in the proper $_SERVER variables instead.
 *
 * @since 5.6.0
 */
function wp_populate_basic_auth_from_authorization_header() {
	// If we don't have anything to pull from, return early.
	if ( ! isset( $_SERVER['HTTP_AUTHORIZATION'] ) && ! isset( $_SERVER['REDIRECT_HTTP_AUTHORIZATION'] ) ) {
		return;
	}

// If either PHP_AUTH key is already set, do nothing.
	if ( isset( $_SERVER['PHP_AUTH_USER'] ) || isset( $_SERVER['PHP_AUTH_PW'] ) ) {
		return;
	}

// From our prior conditional, one of these must be set.
	$header = isset( $_SERVER['HTTP_AUTHORIZATION'] ) ? $_SERVER['HTTP_AUTHORIZATION'] : $_SERVER['REDIRECT_HTTP_AUTHORIZATION'];

// Test to make sure the pattern matches expected.
	if ( ! preg_match( '%^Basic [a-z\d/+]*={0,2}$%i', $header ) ) {
		return;
	}

// Removing `Basic ` the token would start six characters in.
	$token    = substr( $header, 6 );
	$userpass = base64_decode( $token );

// There must be at least one colon in the string.
	if ( ! str_contains( $userpass, ':' ) ) {
		return;
	}

list( $user, $pass ) = explode( ':', $userpass, 2 );

// Now shove them in the proper keys where we're expecting later on.
	$_SERVER['PHP_AUTH_USER'] = $user;
	$_SERVER['PHP_AUTH_PW']   = $pass;
}

/**
 * Checks for the required PHP version, and the mysqli extension or
 * a database drop-in.
 *
 * Dies if requirements are not met.
 *
 * @since 3.0.0
 * @access private
 *
 * @global string   $required_php_version    The required PHP version string.
 * @global string[] $required_php_extensions The names of required PHP extensions.
 * @global string   $wp_version              The WordPress version string.
 */
function wp_check_php_mysql_versions() {
	global $required_php_version, $required_php_extensions, $wp_version;

$php_version = PHP_VERSION;

if ( version_compare( $required_php_version, $php_version, '>' ) ) {
		$protocol = wp_get_server_protocol();
		header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 );
		header( 'Content-Type: text/html; charset=utf-8' );
		printf(
			'Your server is running PHP version %1$s but WordPress %2$s requires at least %3$s.',
			$php_version,
			$wp_version,
			$required_php_version
		);
		exit( 1 );
	}

$missing_extensions = array();

if ( isset( $required_php_extensions ) && is_array( $required_php_extensions ) ) {
		foreach ( $required_php_extensions as $extension ) {
			if ( extension_loaded( $extension ) ) {
				continue;
			}

$missing_extensions[] = sprintf(
				'WordPress %1$s requires the <code>%2$s</code> PHP extension.',
				$wp_version,
				$extension
			);
		}
	}

if ( count( $missing_extensions ) > 0 ) {
		$protocol = wp_get_server_protocol();
		header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 );
		header( 'Content-Type: text/html; charset=utf-8' );
		echo implode( ' ', $missing_extensions );
		exit( 1 );
	}

// This runs before default constants are defined, so we can't assume WP_CONTENT_DIR is set yet.
	$wp_content_dir = defined( 'WP_CONTENT_DIR' ) ? WP_CONTENT_DIR : ABSPATH . 'wp-content';

if ( ! function_exists( 'mysqli_connect' )
		&& ! file_exists( $wp_content_dir . '/db.php' )
	) {
		require_once ABSPATH . WPINC . '/functions.php';
		wp_load_translations_early();

$message = '' . __( 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' ) . "\n";

$message .= '' . sprintf(
			/* translators: %s: mysqli. */
			__( 'Please check that the %s PHP extension is installed and enabled.' ),
			'<code>mysqli</code>'
		) . "\n";

$message .= '' . sprintf(
			/* translators: %s: Support forums URL. */
			__( 'If you are unsure what these terms mean you should probably contact your host. If you still need help you can always visit the <a href="%s">WordPress support forums</a>.' ),
			__( 'https://wordpress.org/support/forums/' )
		) . "\n";

$args = array(
			'exit' => false,
			'code' => 'mysql_not_found',
		);
		wp_die(
			$message,
			__( 'Requirements Not Met' ),
			$args
		);
		exit( 1 );
	}
}

/**
 * Retrieves the current environment type.
 *
 * The type can be set via the `WP_ENVIRONMENT_TYPE` global system variable,
 * or a constant of the same name.
 *
 * Possible values are 'local', 'development', 'staging', and 'production'.
 * If not set, the type defaults to 'production'.
 *
 * @since 5.5.0
 * @since 5.5.1 Added the 'local' type.
 * @since 5.5.1 Removed the ability to alter the list of types.
 *
 * @return string The current environment type.
 */
function wp_get_environment_type() {
	static $current_env = '';

if ( ! defined( 'WP_RUN_CORE_TESTS' ) && $current_env ) {
		return $current_env;
	}

$wp_environments = array(
		'local',
		'development',
		'staging',
		'production',
	);

// Add a note about the deprecated WP_ENVIRONMENT_TYPES constant.
	if ( defined( 'WP_ENVIRONMENT_TYPES' ) && function_exists( '_deprecated_argument' ) ) {
		if ( function_exists( '__' ) ) {
			/* translators: %s: WP_ENVIRONMENT_TYPES */
			$message = sprintf( __( 'The %s constant is no longer supported.' ), 'WP_ENVIRONMENT_TYPES' );
		} else {
			$message = sprintf( 'The %s constant is no longer supported.', 'WP_ENVIRONMENT_TYPES' );
		}

_deprecated_argument(
			'define()',
			'5.5.1',
			$message
		);
	}

// Check if the environment variable has been set, if `getenv` is available on the system.
	if ( function_exists( 'getenv' ) ) {
		$has_env = getenv( 'WP_ENVIRONMENT_TYPE' );
		if ( false !== $has_env ) {
			$current_env = $has_env;
		}
	}

// Fetch the environment from a constant, this overrides the global system variable.
	if ( defined( 'WP_ENVIRONMENT_TYPE' ) && WP_ENVIRONMENT_TYPE ) {
		$current_env = WP_ENVIRONMENT_TYPE;
	}

// Make sure the environment is an allowed one, and not accidentally set to an invalid value.
	if ( ! in_array( $current_env, $wp_environments, true ) ) {
		$current_env = 'production';
	}

return $current_env;
}

/**
 * Retrieves the current development mode.
 *
 * The development mode affects how certain parts of the WordPress application behave,
 * which is relevant when developing for WordPress.
 *
 * Development mode can be set via the `WP_DEVELOPMENT_MODE` constant in `wp-config.php`.
 * Possible values are 'core', 'plugin', 'theme', 'all', or an empty string to disable
 * development mode. 'all' is a special value to signify that all three development modes
 * ('core', 'plugin', and 'theme') are enabled.
 *
 * Development mode is considered separately from `WP_DEBUG` and wp_get_environment_type().
 * It does not affect debugging output, but rather functional nuances in WordPress.
 *
 * This function retrieves the currently set development mode value. To check whether
 * a specific development mode is enabled, use wp_is_development_mode().
 *
 * @since 6.3.0
 *
 * @return string The current development mode.
 */
function wp_get_development_mode() {
	static $current_mode = null;

if ( ! defined( 'WP_RUN_CORE_TESTS' ) && null !== $current_mode ) {
		return $current_mode;
	}

$development_mode = WP_DEVELOPMENT_MODE;

// Exclusively for core tests, rely on the `$_wp_tests_development_mode` global.
	if ( defined( 'WP_RUN_CORE_TESTS' ) && isset( $GLOBALS['_wp_tests_development_mode'] ) ) {
		$development_mode = $GLOBALS['_wp_tests_development_mode'];
	}

$valid_modes = array(
		'core',
		'plugin',
		'theme',
		'all',
		'',
	);

if ( ! in_array( $development_mode, $valid_modes, true ) ) {
		$development_mode = '';
	}

$current_mode = $development_mode;

return $current_mode;
}

/**
 * Checks whether the site is in the given development mode.
 *
 * @since 6.3.0
 *
 * @param string $mode Development mode to check for. Either 'core', 'plugin', 'theme', or 'all'.
 * @return bool True if the given mode is covered by the current development mode, false otherwise.
 */
function wp_is_development_mode( $mode ) {
	$current_mode = wp_get_development_mode();
	if ( empty( $current_mode ) ) {
		return false;
	}

// Return true if the current mode encompasses all modes.
	if ( 'all' === $current_mode ) {
		return true;
	}

// Return true if the current mode is the given mode.
	return $mode === $current_mode;
}

/**
 * Ensures all of WordPress is not loaded when handling a favicon.ico request.
 *
 * Instead, send the headers for a zero-length favicon and bail.
 *
 * @since 3.0.0
 * @deprecated 5.4.0 Deprecated in favor of do_favicon().
 */
function wp_favicon_request() {
	if ( '/favicon.ico' === $_SERVER['REQUEST_URI'] ) {
		header( 'Content-Type: image/vnd.microsoft.icon' );
		exit;
	}
}

/**
 * Dies with a maintenance message when conditions are met.
 *
 * The default message can be replaced by using a drop-in (maintenance.php in
 * the wp-content directory).
 *
 * @since 3.0.0
 * @access private
 */
function wp_maintenance() {
	// Return if maintenance mode is disabled.
	if ( ! wp_is_maintenance_mode() ) {
		return;
	}

if ( file_exists( WP_CONTENT_DIR . '/maintenance.php' ) ) {
		require_once WP_CONTENT_DIR . '/maintenance.php';
		die();
	}

require_once ABSPATH . WPINC . '/functions.php';
	wp_load_translations_early();

header( 'Retry-After: 600' );

wp_die(
		__( 'Briefly unavailable for scheduled maintenance. Check back in a minute.' ),
		__( 'Maintenance' ),
		503
	);
}

/**
 * Checks if maintenance mode is enabled.
 *
 * Checks for a file in the WordPress root directory named ".maintenance".
 * This file will contain the variable $upgrading, set to the time the file
 * was created. If the file was created less than 10 minutes ago, WordPress
 * is in maintenance mode.
 *
 * @since 5.5.0
 *
 * @global int $upgrading The Unix timestamp marking when upgrading WordPress began.
 *
 * @return bool True if maintenance mode is enabled, false otherwise.
 */
function wp_is_maintenance_mode() {
	global $upgrading;

if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() ) {
		return false;
	}

require ABSPATH . '.maintenance';

// If the $upgrading timestamp is older than 10 minutes, consider maintenance over.
	if ( ( time() - $upgrading ) >= 10 * MINUTE_IN_SECONDS ) {
		return false;
	}

// Don't enable maintenance mode while scraping for fatal errors.
	if ( is_int( $upgrading ) && isset( $_REQUEST['wp_scrape_key'], $_REQUEST['wp_scrape_nonce'] ) ) {
		$key   = stripslashes( $_REQUEST['wp_scrape_key'] );
		$nonce = stripslashes( $_REQUEST['wp_scrape_nonce'] );

if ( md5( $upgrading ) === $key && (int) $nonce === $upgrading ) {
			return false;
		}
	}

/**
	 * Filters whether to enable maintenance mode.
	 *
	 * This filter runs before it can be used by plugins. It is designed for
	 * non-web runtimes. If this filter returns true, maintenance mode will be
	 * active and the request will end. If false, the request will be allowed to
	 * continue processing even if maintenance mode should be active.
	 *
	 * @since 4.6.0
	 *
	 * @param bool $enable_checks Whether to enable maintenance mode. Default true.
	 * @param int  $upgrading     The timestamp set in the .maintenance file.
	 */
	if ( ! apply_filters( 'enable_maintenance_mode', true, $upgrading ) ) {
		return false;
	}

return true;
}

/**
 * Gets the time elapsed so far during this PHP script.
 *
 * @since 5.8.0
 *
 * @return float Seconds since the PHP script started.
 */
function timer_float() {
	return microtime( true ) - $_SERVER['REQUEST_TIME_FLOAT'];
}

/**
 * Starts the WordPress micro-timer.
 *
 * @since 0.71
 * @access private
 *
 * @global float $timestart Unix timestamp set at the beginning of the page load.
 * @see timer_stop()
 *
 * @return bool Always returns true.
 */
function timer_start() {
	global $timestart;

$timestart = microtime( true );

return true;
}

/**
 * Retrieves or displays the time from the page start to when function is called.
 *
 * @since 0.71
 *
 * @global float   $timestart Seconds from when timer_start() is called.
 * @global float   $timeend   Seconds from when function is called.
 *
 * @param int|bool $display   Whether to echo or return the results. Accepts 0|false for return,
 *                            1|true for echo. Default 0|false.
 * @param int      $precision The number of digits from the right of the decimal to display.
 *                            Default 3.
 * @return string The "second.microsecond" finished time calculation. The number is formatted
 *                for human consumption, both localized and rounded.
 */
function timer_stop( $display = 0, $precision = 3 ) {
	global $timestart, $timeend;

$timeend   = microtime( true );
	$timetotal = $timeend - $timestart;

if ( function_exists( 'number_format_i18n' ) ) {
		$r = number_format_i18n( $timetotal, $precision );
	} else {
		$r = number_format( $timetotal, $precision );
	}

if ( $display ) {
		echo $r;
	}

return $r;
}

/**
 * Sets PHP error reporting based on WordPress debug settings.
 *
 * Uses three constants: `WP_DEBUG`, `WP_DEBUG_DISPLAY`, and `WP_DEBUG_LOG`.
 * All three can be defined in wp-config.php. By default, `WP_DEBUG` and
 * `WP_DEBUG_LOG` are set to false, and `WP_DEBUG_DISPLAY` is set to true.
 *
 * When `WP_DEBUG` is true, all PHP notices are reported. WordPress will also
 * display internal notices: when a deprecated WordPress function, function
 * argument, or file is used. Deprecated code may be removed from a later
 * version.
 *
 * It is strongly recommended that plugin and theme developers use `WP_DEBUG`
 * in their development environments.
 *
 * `WP_DEBUG_DISPLAY` and `WP_DEBUG_LOG` perform no function unless `WP_DEBUG`
 * is true.
 *
 * When `WP_DEBUG_DISPLAY` is true, WordPress will force errors to be displayed.
 * `WP_DEBUG_DISPLAY` defaults to true. Defining it as null prevents WordPress
 * from changing the global configuration setting. Defining `WP_DEBUG_DISPLAY`
 * as false will force errors to be hidden.
 *
 * When `WP_DEBUG_LOG` is true, errors will be logged to `wp-content/debug.log`.
 * When `WP_DEBUG_LOG` is a valid path, errors will be logged to the specified file.
 *
 * Errors are never displayed for XML-RPC, REST, `ms-files.php`, and Ajax requests.
 *
 * @since 3.0.0
 * @since 5.1.0 `WP_DEBUG_LOG` can be a file path.
 * @access private
 */
function wp_debug_mode() {
	/**
	 * Filters whether to allow the debug mode check to occur.
	 *
	 * This filter runs before it can be used by plugins. It is designed for
	 * non-web runtimes. Returning false causes the `WP_DEBUG` and related
	 * constants to not be checked and the default PHP values for errors
	 * will be used unless you take care to update them yourself.
	 *
	 * To use this filter you must define a `$wp_filter` global before
	 * WordPress loads, usually in `wp-config.php`.
	 *
	 * Example:
	 *
	 *     $GLOBALS['wp_filter'] = array(
	 *         'enable_wp_debug_mode_checks' => array(
	 *             10 => array(
	 *                 array(
	 *                     'accepted_args' => 0,
	 *                     'function'      => function() {
	 *                         return false;
	 *                     },
	 *                 ),
	 *             ),
	 *         ),
	 *     );
	 *
	 * @since 4.6.0
	 *
	 * @param bool $enable_debug_mode Whether to enable debug mode checks to occur. Default true.
	 */
	if ( ! apply_filters( 'enable_wp_debug_mode_checks', true ) ) {
		return;
	}

if ( WP_DEBUG ) {
		error_reporting( E_ALL );

if ( WP_DEBUG_DISPLAY ) {
			ini_set( 'display_errors', 1 );
		} elseif ( null !== WP_DEBUG_DISPLAY ) {
			ini_set( 'display_errors', 0 );
		}

if ( in_array( strtolower( (string) WP_DEBUG_LOG ), array( 'true', '1' ), true ) ) {
			$log_path = WP_CONTENT_DIR . '/debug.log';
		} elseif ( is_string( WP_DEBUG_LOG ) ) {
			$log_path = WP_DEBUG_LOG;
		} else {
			$log_path = false;
		}

if ( $log_path ) {
			ini_set( 'log_errors', 1 );
			ini_set( 'error_log', $log_path );
		}
	} else {
		error_reporting( E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR );
	}

/*
	 * The 'REST_REQUEST' check here is optimistic as the constant is most
	 * likely not set at this point even if it is in fact a REST request.
	 */
	if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || defined( 'MS_FILES_REQUEST' )
		|| ( defined( 'WP_INSTALLING' ) && WP_INSTALLING )
		|| wp_doing_ajax() || wp_is_json_request()
	) {
		ini_set( 'display_errors', 0 );
	}
}

/**
 * Sets the location of the language directory.
 *
 * To set directory manually, define the `WP_LANG_DIR` constant
 * in wp-config.php.
 *
 * If the language directory exists within `WP_CONTENT_DIR`, it
 * is used. Otherwise the language directory is assumed to live
 * in `WPINC`.
 *
 * @since 3.0.0
 * @access private
 */
function wp_set_lang_dir() {
	if ( ! defined( 'WP_LANG_DIR' ) ) {
		if ( file_exists( WP_CONTENT_DIR . '/languages' ) && @is_dir( WP_CONTENT_DIR . '/languages' )
			|| ! @is_dir( ABSPATH . WPINC . '/languages' )
		) {
			/**
			 * Server path of the language directory.
			 *
			 * No leading slash, no trailing slash, full path, not relative to ABSPATH
			 *
			 * @since 2.1.0
			 */
			define( 'WP_LANG_DIR', WP_CONTENT_DIR . '/languages' );

if ( ! defined( 'LANGDIR' ) ) {
				// Old static relative path maintained for limited backward compatibility - won't work in some cases.
				define( 'LANGDIR', 'wp-content/languages' );
			}
		} else {
			/**
			 * Server path of the language directory.
			 *
			 * No leading slash, no trailing slash, full path, not relative to `ABSPATH`.
			 *
			 * @since 2.1.0
			 */
			define( 'WP_LANG_DIR', ABSPATH . WPINC . '/languages' );

if ( ! defined( 'LANGDIR' ) ) {
				// Old relative path maintained for backward compatibility.
				define( 'LANGDIR', WPINC . '/languages' );
			}
		}
	}
}

/**
 * Loads the database class file and instantiates the `$wpdb` global.
 *
 * @since 2.5.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 */
function require_wp_db() {
	global $wpdb;

require_once ABSPATH . WPINC . '/class-wpdb.php';

if ( file_exists( WP_CONTENT_DIR . '/db.php' ) ) {
		require_once WP_CONTENT_DIR . '/db.php';
	}

if ( isset( $wpdb ) ) {
		return;
	}

$dbuser     = defined( 'DB_USER' ) ? DB_USER : '';
	$dbpassword = defined( 'DB_PASSWORD' ) ? DB_PASSWORD : '';
	$dbname     = defined( 'DB_NAME' ) ? DB_NAME : '';
	$dbhost     = defined( 'DB_HOST' ) ? DB_HOST : '';

$wpdb = new wpdb( $dbuser, $dbpassword, $dbname, $dbhost );
}

/**
 * Sets the database table prefix and the format specifiers for database
 * table columns.
 *
 * Columns not listed here default to `%s`.
 *
 * @since 3.0.0
 * @access private
 *
 * @global wpdb   $wpdb         WordPress database abstraction object.
 * @global string $table_prefix The database table prefix.
 */
function wp_set_wpdb_vars() {
	global $wpdb, $table_prefix;

if ( ! empty( $wpdb->error ) ) {
		dead_db();
	}

$wpdb->field_types = array(
		'post_author'      => '%d',
		'post_parent'      => '%d',
		'menu_order'       => '%d',
		'term_id'          => '%d',
		'term_group'       => '%d',
		'term_taxonomy_id' => '%d',
		'parent'           => '%d',
		'count'            => '%d',
		'object_id'        => '%d',
		'term_order'       => '%d',
		'ID'               => '%d',
		'comment_ID'       => '%d',
		'comment_post_ID'  => '%d',
		'comment_parent'   => '%d',
		'user_id'          => '%d',
		'link_id'          => '%d',
		'link_owner'       => '%d',
		'link_rating'      => '%d',
		'option_id'        => '%d',
		'blog_id'          => '%d',
		'meta_id'          => '%d',
		'post_id'          => '%d',
		'user_status'      => '%d',
		'umeta_id'         => '%d',
		'comment_karma'    => '%d',
		'comment_count'    => '%d',
		// Multisite:
		'active'           => '%d',
		'cat_id'           => '%d',
		'deleted'          => '%d',
		'lang_id'          => '%d',
		'mature'           => '%d',
		'public'           => '%d',
		'site_id'          => '%d',
		'spam'             => '%d',
	);

$prefix = $wpdb->set_prefix( $table_prefix );

if ( is_wp_error( $prefix ) ) {
		wp_load_translations_early();
		wp_die(
			sprintf(
				/* translators: 1: $table_prefix, 2: wp-config.php */
				__( 'Error: %1$s in %2$s can only contain numbers, letters, and underscores.' ),
				'<code>$table_prefix</code>',
				'<code>wp-config.php</code>'
			)
		);
	}
}

/**
 * Toggles `$_wp_using_ext_object_cache` on and off without directly
 * touching global.
 *
 * @since 3.7.0
 *
 * @global bool $_wp_using_ext_object_cache
 *
 * @param bool $using Whether external object cache is being used.
 * @return bool The current 'using' setting.
 */
function wp_using_ext_object_cache( $using = null ) {
	global $_wp_using_ext_object_cache;

$current_using = $_wp_using_ext_object_cache;

if ( null !== $using ) {
		$_wp_using_ext_object_cache = $using;
	}

return $current_using;
}

/**
 * Starts the WordPress object cache.
 *
 * If an object-cache.php file exists in the wp-content directory,
 * it uses that drop-in as an external object cache.
 *
 * @since 3.0.0
 * @access private
 *
 * @global array $wp_filter Stores all of the filters.
 */
function wp_start_object_cache() {
	global $wp_filter;
	static $first_init = true;

// Only perform the following checks once.

/**
	 * Filters whether to enable loading of the object-cache.php drop-in.
	 *
	 * This filter runs before it can be used by plugins. It is designed for non-web
	 * runtimes. If false is returned, object-cache.php will never be loaded.
	 *
	 * @since 5.8.0
	 *
	 * @param bool $enable_object_cache Whether to enable loading object-cache.php (if present).
	 *                                  Default true.
	 */
	if ( $first_init && apply_filters( 'enable_loading_object_cache_dropin', true ) ) {
		if ( ! function_exists( 'wp_cache_init' ) ) {
			/*
			 * This is the normal situation. First-run of this function. No
			 * caching backend has been loaded.
			 *
			 * We try to load a custom caching backend, and then, if it
			 * results in a wp_cache_init() function existing, we note
			 * that an external object cache is being used.
			 */
			if ( file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) {
				require_once WP_CONTENT_DIR . '/object-cache.php';

if ( function_exists( 'wp_cache_init' ) ) {
					wp_using_ext_object_cache( true );
				}

// Re-initialize any hooks added manually by object-cache.php.
				if ( $wp_filter ) {
					$wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter );
				}
			}
		} elseif ( ! wp_using_ext_object_cache() && file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) {
			/*
			 * Sometimes advanced-cache.php can load object-cache.php before
			 * this function is run. This breaks the function_exists() check
			 * above and can result in wp_using_ext_object_cache() returning
			 * false when actually an external cache is in use.
			 */
			wp_using_ext_object_cache( true );
		}
	}

if ( ! wp_using_ext_object_cache() ) {
		require_once ABSPATH . WPINC . '/cache.php';
	}

require_once ABSPATH . WPINC . '/cache-compat.php';

/*
	 * If cache supports reset, reset instead of init if already
	 * initialized. Reset signals to the cache that global IDs
	 * have changed and it may need to update keys and cleanup caches.
	 */
	if ( ! $first_init && function_exists( 'wp_cache_switch_to_blog' ) ) {
		wp_cache_switch_to_blog( get_current_blog_id() );
	} elseif ( function_exists( 'wp_cache_init' ) ) {
		wp_cache_init();
	}

if ( function_exists( 'wp_cache_add_global_groups' ) ) {
		wp_cache_add_global_groups(
			array(
				'blog-details',
				'blog-id-cache',
				'blog-lookup',
				'blog_meta',
				'global-posts',
				'image_editor',
				'networks',
				'network-queries',
				'sites',
				'site-details',
				'site-options',
				'site-queries',
				'site-transient',
				'theme_files',
				'translation_files',
				'rss',
				'users',
				'user-queries',
				'user_meta',
				'useremail',
				'userlogins',
				'userslugs',
			)
		);

wp_cache_add_non_persistent_groups( array( 'counts', 'plugins', 'theme_json' ) );
	}

$first_init = false;
}

/**
 * Redirects to the installer if WordPress is not installed.
 *
 * Dies with an error message when Multisite is enabled.
 *
 * @since 3.0.0
 * @access private
 */
function wp_not_installed() {
	if ( is_blog_installed() || wp_installing() ) {
		return;
	}

nocache_headers();

if ( is_multisite() ) {
		wp_die( __( 'The site you have requested is not installed properly. Please contact the system administrator.' ) );
	}

require ABSPATH . WPINC . '/kses.php';
	require ABSPATH . WPINC . '/pluggable.php';

$link = wp_guess_url() . '/wp-admin/install.php';

wp_redirect( $link );
	die();
}

/**
 * Retrieves an array of must-use plugin files.
 *
 * The default directory is wp-content/mu-plugins. To change the default
 * directory manually, define `WPMU_PLUGIN_DIR` and `WPMU_PLUGIN_URL`
 * in wp-config.php.
 *
 * @since 3.0.0
 * @access private
 *
 * @return string[] Array of absolute paths of files to include.
 */
function wp_get_mu_plugins() {
	$mu_plugins = array();

if ( ! is_dir( WPMU_PLUGIN_DIR ) ) {
		return $mu_plugins;
	}

$dh = opendir( WPMU_PLUGIN_DIR );
	if ( ! $dh ) {
		return $mu_plugins;
	}

while ( ( $plugin = readdir( $dh ) ) !== false ) {
		if ( str_ends_with( $plugin, '.php' ) ) {
			$mu_plugins[] = WPMU_PLUGIN_DIR . '/' . $plugin;
		}
	}

closedir( $dh );

sort( $mu_plugins );

return $mu_plugins;
}

/**
 * Retrieves an array of active and valid plugin files.
 *
 * While upgrading or installing WordPress, no plugins are returned.
 *
 * The default directory is `wp-content/plugins`. To change the default
 * directory manually, define `WP_PLUGIN_DIR` and `WP_PLUGIN_URL`
 * in `wp-config.php`.
 *
 * @since 3.0.0
 * @access private
 *
 * @return string[] Array of paths to plugin files relative to the plugins directory.
 */
function wp_get_active_and_valid_plugins() {
	$plugins        = array();
	$active_plugins = (array) get_option( 'active_plugins', array() );

// Check for hacks file if the option is enabled.
	if ( get_option( 'hack_file' ) && file_exists( ABSPATH . 'my-hacks.php' ) ) {
		_deprecated_file( 'my-hacks.php', '1.5.0' );
		array_unshift( $plugins, ABSPATH . 'my-hacks.php' );
	}

if ( empty( $active_plugins ) || wp_installing() ) {
		return $plugins;
	}

$network_plugins = is_multisite() ? wp_get_active_network_plugins() : false;

foreach ( $active_plugins as $plugin ) {
		if ( ! validate_file( $plugin )                     // $plugin must validate as file.
			&& str_ends_with( $plugin, '.php' )             // $plugin must end with '.php'.
			&& file_exists( WP_PLUGIN_DIR . '/' . $plugin ) // $plugin must exist.
			// Not already included as a network plugin.
			&& ( ! $network_plugins || ! in_array( WP_PLUGIN_DIR . '/' . $plugin, $network_plugins, true ) )
		) {
			$plugins[] = WP_PLUGIN_DIR . '/' . $plugin;
		}
	}

/*
	 * Remove plugins from the list of active plugins when we're on an endpoint
	 * that should be protected against WSODs and the plugin is paused.
	 */
	if ( wp_is_recovery_mode() ) {
		$plugins = wp_skip_paused_plugins( $plugins );
	}

return $plugins;
}

/**
 * Filters a given list of plugins, removing any paused plugins from it.
 *
 * @since 5.2.0
 *
 * @global WP_Paused_Extensions_Storage $_paused_plugins
 *
 * @param string[] $plugins Array of absolute plugin main file paths.
 * @return string[] Filtered array of plugins, without any paused plugins.
 */
function wp_skip_paused_plugins( array $plugins ) {
	$paused_plugins = wp_paused_plugins()->get_all();

if ( empty( $paused_plugins ) ) {
		return $plugins;
	}

foreach ( $plugins as $index => $plugin ) {
		list( $plugin ) = explode( '/', plugin_basename( $plugin ) );

if ( array_key_exists( $plugin, $paused_plugins ) ) {
			unset( $plugins[ $index ] );

// Store list of paused plugins for displaying an admin notice.
			$GLOBALS['_paused_plugins'][ $plugin ] = $paused_plugins[ $plugin ];
		}
	}

return $plugins;
}

/**
 * Retrieves an array of active and valid themes.
 *
 * While upgrading or installing WordPress, no themes are returned.
 *
 * @since 5.1.0
 * @access private
 *
 * @global string $pagenow            The filename of the current screen.
 * @global string $wp_stylesheet_path Path to current theme's stylesheet directory.
 * @global string $wp_template_path   Path to current theme's template directory.
 *
 * @return string[] Array of absolute paths to theme directories.
 */
function wp_get_active_and_valid_themes() {
	global $pagenow, $wp_stylesheet_path, $wp_template_path;

$themes = array();

if ( wp_installing() && 'wp-activate.php' !== $pagenow ) {
		return $themes;
	}

if ( is_child_theme() ) {
		$themes[] = $wp_stylesheet_path;
	}

$themes[] = $wp_template_path;

/*
	 * Remove themes from the list of active themes when we're on an endpoint
	 * that should be protected against WSODs and the theme is paused.
	 */
	if ( wp_is_recovery_mode() ) {
		$themes = wp_skip_paused_themes( $themes );

// If no active and valid themes exist, skip loading themes.
		if ( empty( $themes ) ) {
			add_filter( 'wp_using_themes', '__return_false' );
		}
	}

return $themes;
}

/**
 * Filters a given list of themes, removing any paused themes from it.
 *
 * @since 5.2.0
 *
 * @global WP_Paused_Extensions_Storage $_paused_themes
 *
 * @param string[] $themes Array of absolute theme directory paths.
 * @return string[] Filtered array of absolute paths to themes, without any paused themes.
 */
function wp_skip_paused_themes( array $themes ) {
	$paused_themes = wp_paused_themes()->get_all();

if ( empty( $paused_themes ) ) {
		return $themes;
	}

foreach ( $themes as $index => $theme ) {
		$theme = basename( $theme );

if ( array_key_exists( $theme, $paused_themes ) ) {
			unset( $themes[ $index ] );

// Store list of paused themes for displaying an admin notice.
			$GLOBALS['_paused_themes'][ $theme ] = $paused_themes[ $theme ];
		}
	}

return $themes;
}

/**
 * Determines whether WordPress is in Recovery Mode.
 *
 * In this mode, plugins or themes that cause WSODs will be paused.
 *
 * @since 5.2.0
 *
 * @return bool
 */
function wp_is_recovery_mode() {
	return wp_recovery_mode()->is_active();
}

/**
 * Determines whether we are currently on an endpoint that should be protected against WSODs.
 *
 * @since 5.2.0
 *
 * @global string $pagenow The filename of the current screen.
 *
 * @return bool True if the current endpoint should be protected.
 */
function is_protected_endpoint() {
	// Protect login pages.
	if ( isset( $GLOBALS['pagenow'] ) && 'wp-login.php' === $GLOBALS['pagenow'] ) {
		return true;
	}

// Protect the admin backend.
	if ( is_admin() && ! wp_doing_ajax() ) {
		return true;
	}

// Protect Ajax actions that could help resolve a fatal error should be available.
	if ( is_protected_ajax_action() ) {
		return true;
	}

/**
	 * Filters whether the current request is against a protected endpoint.
	 *
	 * This filter is only fired when an endpoint is requested which is not already protected by
	 * WordPress core. As such, it exclusively allows providing further protected endpoints in
	 * addition to the admin backend, login pages and protected Ajax actions.
	 *
	 * @since 5.2.0
	 *
	 * @param bool $is_protected_endpoint Whether the currently requested endpoint is protected.
	 *                                    Default false.
	 */
	return (bool) apply_filters( 'is_protected_endpoint', false );
}

/**
 * Determines whether we are currently handling an Ajax action that should be protected against WSODs.
 *
 * @since 5.2.0
 *
 * @return bool True if the current Ajax action should be protected.
 */
function is_protected_ajax_action() {
	if ( ! wp_doing_ajax() ) {
		return false;
	}

if ( ! isset( $_REQUEST['action'] ) ) {
		return false;
	}

$actions_to_protect = array(
		'edit-theme-plugin-file', // Saving changes in the core code editor.
		'heartbeat',              // Keep the heart beating.
		'install-plugin',         // Installing a new plugin.
		'install-theme',          // Installing a new theme.
		'search-plugins',         // Searching in the list of plugins.
		'search-install-plugins', // Searching for a plugin in the plugin install screen.
		'update-plugin',          // Update an existing plugin.
		'update-theme',           // Update an existing theme.
		'activate-plugin',        // Activating an existing plugin.
	);

/**
	 * Filters the array of protected Ajax actions.
	 *
	 * This filter is only fired when doing Ajax and the Ajax request has an 'action' property.
	 *
	 * @since 5.2.0
	 *
	 * @param string[] $actions_to_protect Array of strings with Ajax actions to protect.
	 */
	$actions_to_protect = (array) apply_filters( 'wp_protected_ajax_actions', $actions_to_protect );

if ( ! in_array( $_REQUEST['action'], $actions_to_protect, true ) ) {
		return false;
	}

return true;
}

/**
 * Sets internal encoding.
 *
 * In most cases the default internal encoding is latin1, which is
 * of no use, since we want to use the `mb_` functions for `utf-8` strings.
 *
 * @since 3.0.0
 * @access private
 */
function wp_set_internal_encoding() {
	if ( function_exists( 'mb_internal_encoding' ) ) {
		$charset = get_option( 'blog_charset' );
		// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
		if ( ! $charset || ! @mb_internal_encoding( $charset ) ) {
			mb_internal_encoding( 'UTF-8' );
		}
	}
}

/**
 * Adds magic quotes to `$_GET`, `$_POST`, `$_COOKIE`, and `$_SERVER`.
 *
 * Also forces `$_REQUEST` to be `$_GET + $_POST`. If `$_SERVER`,
 * `$_COOKIE`, or `$_ENV` are needed, use those superglobals directly.
 *
 * @since 3.0.0
 * @access private
 */
function wp_magic_quotes() {
	// Escape with wpdb.
	$_GET    = add_magic_quotes( $_GET );
	$_POST   = add_magic_quotes( $_POST );
	$_COOKIE = add_magic_quotes( $_COOKIE );
	$_SERVER = add_magic_quotes( $_SERVER );

// Force REQUEST to be GET + POST.
	$_REQUEST = array_merge( $_GET, $_POST );
}

/**
 * Runs just before PHP shuts down execution.
 *
 * @since 1.2.0
 * @access private
 */
function shutdown_action_hook() {
	/**
	 * Fires just before PHP shuts down execution.
	 *
	 * @since 1.2.0
	 */
	do_action( 'shutdown' );

wp_cache_close();
}

/**
 * Clones an object.
 *
 * @since 2.7.0
 * @deprecated 3.2.0
 *
 * @param object $input_object The object to clone.
 * @return object The cloned object.
 */
function wp_clone( $input_object ) {
	// Use parens for clone to accommodate PHP 4. See #17880.
	return clone( $input_object );
}

/**
 * Determines whether the current request is for the login screen.
 *
 * @since 6.1.0
 *
 * @see wp_login_url()
 *
 * @return bool True if inside WordPress login screen, false otherwise.
 */
function is_login() {
	return false !== stripos( wp_login_url(), $_SERVER['SCRIPT_NAME'] );
}

/**
 * Determines whether the current request is for an administrative interface page.
 *
 * Does not check if the user is an administrator; use current_user_can()
 * for checking roles and capabilities.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 1.5.1
 *
 * @global WP_Screen $current_screen WordPress current screen object.
 *
 * @return bool True if inside WordPress administration interface, false otherwise.
 */
function is_admin() {
	if ( isset( $GLOBALS['current_screen'] ) ) {
		return $GLOBALS['current_screen']->in_admin();
	} elseif ( defined( 'WP_ADMIN' ) ) {
		return WP_ADMIN;
	}

return false;
}

/**
 * Determines whether the current request is for a site's administrative interface.
 *
 * e.g. `/wp-admin/`
 *
 * Does not check if the user is an administrator; use current_user_can()
 * for checking roles and capabilities.
 *
 * @since 3.1.0
 *
 * @global WP_Screen $current_screen WordPress current screen object.
 *
 * @return bool True if inside WordPress site administration pages.
 */
function is_blog_admin() {
	if ( isset( $GLOBALS['current_screen'] ) ) {
		return $GLOBALS['current_screen']->in_admin( 'site' );
	} elseif ( defined( 'WP_BLOG_ADMIN' ) ) {
		return WP_BLOG_ADMIN;
	}

return false;
}

/**
 * Determines whether the current request is for the network administrative interface.
 *
 * e.g. `/wp-admin/network/`
 *
 * Does not check if the user is an administrator; use current_user_can()
 * for checking roles and capabilities.
 *
 * Does not check if the site is a Multisite network; use is_multisite()
 * for checking if Multisite is enabled.
 *
 * @since 3.1.0
 *
 * @global WP_Screen $current_screen WordPress current screen object.
 *
 * @return bool True if inside WordPress network administration pages.
 */
function is_network_admin() {
	if ( isset( $GLOBALS['current_screen'] ) ) {
		return $GLOBALS['current_screen']->in_admin( 'network' );
	} elseif ( defined( 'WP_NETWORK_ADMIN' ) ) {
		return WP_NETWORK_ADMIN;
	}

return false;
}

/**
 * Determines whether the current request is for a user admin screen.
 *
 * e.g. `/wp-admin/user/`
 *
 * Does not check if the user is an administrator; use current_user_can()
 * for checking roles and capabilities.
 *
 * @since 3.1.0
 *
 * @global WP_Screen $current_screen WordPress current screen object.
 *
 * @return bool True if inside WordPress user administration pages.
 */
function is_user_admin() {
	if ( isset( $GLOBALS['current_screen'] ) ) {
		return $GLOBALS['current_screen']->in_admin( 'user' );
	} elseif ( defined( 'WP_USER_ADMIN' ) ) {
		return WP_USER_ADMIN;
	}

return false;
}

/**
 * Determines whether Multisite is enabled.
 *
 * @since 3.0.0
 *
 * @return bool True if Multisite is enabled, false otherwise.
 */
function is_multisite() {
	if ( defined( 'MULTISITE' ) ) {
		return MULTISITE;
	}

if ( defined( 'SUBDOMAIN_INSTALL' ) || defined( 'VHOST' ) || defined( 'SUNRISE' ) ) {
		return true;
	}

return false;
}

/**
 * Converts a value to non-negative integer.
 *
 * @since 2.5.0
 *
 * @param mixed $maybeint Data you wish to have converted to a non-negative integer.
 * @return int A non-negative integer.
 */
function absint( $maybeint ) {
	return abs( (int) $maybeint );
}

/**
 * Retrieves the current site ID.
 *
 * @since 3.1.0
 *
 * @global int $blog_id
 *
 * @return int Site ID.
 */
function get_current_blog_id() {
	global $blog_id;

return absint( $blog_id );
}

/**
 * Retrieves the current network ID.
 *
 * @since 4.6.0
 *
 * @return int The ID of the current network.
 */
function get_current_network_id() {
	if ( ! is_multisite() ) {
		return 1;
	}

$current_network = get_network();

if ( ! isset( $current_network->id ) ) {
		return get_main_network_id();
	}

return absint( $current_network->id );
}

/**
 * Attempts an early load of translations.
 *
 * Used for errors encountered during the initial loading process, before
 * the locale has been properly detected and loaded.
 *
 * Designed for unusual load sequences (like setup-config.php) or for when
 * the script will then terminate with an error, otherwise there is a risk
 * that a file can be double-included.
 *
 * @since 3.4.0
 * @access private
 *
 * @global WP_Textdomain_Registry $wp_textdomain_registry WordPress Textdomain Registry.
 * @global WP_Locale              $wp_locale              WordPress date and time locale object.
 */
function wp_load_translations_early() {
	global $wp_textdomain_registry, $wp_locale;
	static $loaded = false;

if ( $loaded ) {
		return;
	}

$loaded = true;

if ( function_exists( 'did_action' ) && did_action( 'init' ) ) {
		return;
	}

// We need $wp_local_package.
	require ABSPATH . WPINC . '/version.php';

// Translation and localization.
	require_once ABSPATH . WPINC . '/pomo/mo.php';
	require_once ABSPATH . WPINC . '/l10n/class-wp-translation-controller.php';
	require_once ABSPATH . WPINC . '/l10n/class-wp-translations.php';
	require_once ABSPATH . WPINC . '/l10n/class-wp-translation-file.php';
	require_once ABSPATH . WPINC . '/l10n/class-wp-translation-file-mo.php';
	require_once ABSPATH . WPINC . '/l10n/class-wp-translation-file-php.php';
	require_once ABSPATH . WPINC . '/l10n.php';
	require_once ABSPATH . WPINC . '/class-wp-textdomain-registry.php';
	require_once ABSPATH . WPINC . '/class-wp-locale.php';
	require_once ABSPATH . WPINC . '/class-wp-locale-switcher.php';

// General libraries.
	require_once ABSPATH . WPINC . '/plugin.php';

$locales   = array();
	$locations = array();

if ( ! $wp_textdomain_registry instanceof WP_Textdomain_Registry ) {
		$wp_textdomain_registry = new WP_Textdomain_Registry();
	}

while ( true ) {
		if ( defined( 'WPLANG' ) ) {
			if ( '' === WPLANG ) {
				break;
			}
			$locales[] = WPLANG;
		}

if ( isset( $wp_local_package ) ) {
			$locales[] = $wp_local_package;
		}

if ( ! $locales ) {
			break;
		}

if ( defined( 'WP_LANG_DIR' ) && @is_dir( WP_LANG_DIR ) ) {
			$locations[] = WP_LANG_DIR;
		}

if ( defined( 'WP_CONTENT_DIR' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) ) {
			$locations[] = WP_CONTENT_DIR . '/languages';
		}

if ( @is_dir( ABSPATH . 'wp-content/languages' ) ) {
			$locations[] = ABSPATH . 'wp-content/languages';
		}

if ( @is_dir( ABSPATH . WPINC . '/languages' ) ) {
			$locations[] = ABSPATH . WPINC . '/languages';
		}

if ( ! $locations ) {
			break;
		}

$locations = array_unique( $locations );

foreach ( $locales as $locale ) {
			foreach ( $locations as $location ) {
				if ( file_exists( $location . '/' . $locale . '.mo' ) ) {
					load_textdomain( 'default', $location . '/' . $locale . '.mo', $locale );

if ( defined( 'WP_SETUP_CONFIG' ) && file_exists( $location . '/admin-' . $locale . '.mo' ) ) {
						load_textdomain( 'default', $location . '/admin-' . $locale . '.mo', $locale );
					}

break 2;
				}
			}
		}

break;
	}

$wp_locale = new WP_Locale();
}

/**
 * Checks or sets whether WordPress is in "installation" mode.
 *
 * If the `WP_INSTALLING` constant is defined during the bootstrap, `wp_installing()` will default to `true`.
 *
 * @since 4.4.0
 *
 * @param bool $is_installing Optional. True to set WP into Installing mode, false to turn Installing mode off.
 *                            Omit this parameter if you only want to fetch the current status.
 * @return bool True if WP is installing, otherwise false. When a `$is_installing` is passed, the function will
 *              report whether WP was in installing mode prior to the change to `$is_installing`.
 */
function wp_installing( $is_installing = null ) {
	static $installing = null;

// Support for the `WP_INSTALLING` constant, defined before WP is loaded.
	if ( is_null( $installing ) ) {
		$installing = defined( 'WP_INSTALLING' ) && WP_INSTALLING;
	}

if ( ! is_null( $is_installing ) ) {
		$old_installing = $installing;
		$installing     = $is_installing;

return (bool) $old_installing;
	}

return (bool) $installing;
}

/**
 * Determines if SSL is used.
 *
 * @since 2.6.0
 * @since 4.6.0 Moved from functions.php to load.php.
 *
 * @return bool True if SSL, otherwise false.
 */
function is_ssl() {
	if ( isset( $_SERVER['HTTPS'] ) ) {
		if ( 'on' === strtolower( $_SERVER['HTTPS'] ) ) {
			return true;
		}

if ( '1' === (string) $_SERVER['HTTPS'] ) {
			return true;
		}
	} elseif ( isset( $_SERVER['SERVER_PORT'] ) && ( '443' === (string) $_SERVER['SERVER_PORT'] ) ) {
		return true;
	}

return false;
}

/**
 * Converts a shorthand byte value to an integer byte value.
 *
 * @since 2.3.0
 * @since 4.6.0 Moved from media.php to load.php.
 *
 * @link https://www.php.net/manual/en/function.ini-get.php
 * @link https://www.php.net/manual/en/faq.using.php#faq.using.shorthandbytes
 *
 * @param string $value A (PHP ini) byte value, either shorthand or ordinary.
 * @return int An integer byte value.
 */
function wp_convert_hr_to_bytes( $value ) {
	$value = strtolower( trim( $value ) );
	$bytes = (int) $value;

if ( str_contains( $value, 'g' ) ) {
		$bytes *= GB_IN_BYTES;
	} elseif ( str_contains( $value, 'm' ) ) {
		$bytes *= MB_IN_BYTES;
	} elseif ( str_contains( $value, 'k' ) ) {
		$bytes *= KB_IN_BYTES;
	}

// Deal with large (float) values which run into the maximum integer size.
	return min( $bytes, PHP_INT_MAX );
}

/**
 * Determines whether a PHP ini value is changeable at runtime.
 *
 * @since 4.6.0
 *
 * @link https://www.php.net/manual/en/function.ini-get-all.php
 *
 * @param string $setting The name of the ini setting to check.
 * @return bool True if the value is changeable at runtime. False otherwise.
 */
function wp_is_ini_value_changeable( $setting ) {
	static $ini_all;

if ( ! isset( $ini_all ) ) {
		$ini_all = false;
		// Sometimes `ini_get_all()` is disabled via the `disable_functions` option for "security purposes".
		if ( function_exists( 'ini_get_all' ) ) {
			$ini_all = ini_get_all();
		}
	}

if ( isset( $ini_all[ $setting ]['access'] )
		&& ( INI_ALL === $ini_all[ $setting ]['access'] || INI_USER === $ini_all[ $setting ]['access'] )
	) {
		return true;
	}

// If we were unable to retrieve the details, fail gracefully to assume it's changeable.
	if ( ! is_array( $ini_all ) ) {
		return true;
	}

return false;
}

/**
 * Determines whether the current request is a WordPress Ajax request.
 *
 * @since 4.7.0
 *
 * @return bool True if it's a WordPress Ajax request, false otherwise.
 */
function wp_doing_ajax() {
	/**
	 * Filters whether the current request is a WordPress Ajax request.
	 *
	 * @since 4.7.0
	 *
	 * @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request.
	 */
	return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX );
}

/**
 * Determines whether the current request should use themes.
 *
 * @since 5.1.0
 *
 * @return bool True if themes should be used, false otherwise.
 */
function wp_using_themes() {
	/**
	 * Filters whether the current request should use themes.
	 *
	 * @since 5.1.0
	 *
	 * @param bool $wp_using_themes Whether the current request should use themes.
	 */
	return apply_filters( 'wp_using_themes', defined( 'WP_USE_THEMES' ) && WP_USE_THEMES );
}

/**
 * Determines whether the current request is a WordPress cron request.
 *
 * @since 4.8.0
 *
 * @return bool True if it's a WordPress cron request, false otherwise.
 */
function wp_doing_cron() {
	/**
	 * Filters whether the current request is a WordPress cron request.
	 *
	 * @since 4.8.0
	 *
	 * @param bool $wp_doing_cron Whether the current request is a WordPress cron request.
	 */
	return apply_filters( 'wp_doing_cron', defined( 'DOING_CRON' ) && DOING_CRON );
}

/**
 * Checks whether the given variable is a WordPress Error.
 *
 * Returns whether `$thing` is an instance of the `WP_Error` class.
 *
 * @since 2.1.0
 *
 * @param mixed $thing The variable to check.
 * @return bool Whether the variable is an instance of WP_Error.
 */
function is_wp_error( $thing ) {
	$is_wp_error = ( $thing instanceof WP_Error );

if ( $is_wp_error ) {
		/**
		 * Fires when `is_wp_error()` is called and its parameter is an instance of `WP_Error`.
		 *
		 * @since 5.6.0
		 *
		 * @param WP_Error $thing The error object passed to `is_wp_error()`.
		 */
		do_action( 'is_wp_error_instance', $thing );
	}

return $is_wp_error;
}

/**
 * Determines whether file modifications are allowed.
 *
 * @since 4.8.0
 *
 * @param string $context The usage context.
 * @return bool True if file modification is allowed, false otherwise.
 */
function wp_is_file_mod_allowed( $context ) {
	/**
	 * Filters whether file modifications are allowed.
	 *
	 * @since 4.8.0
	 *
	 * @param bool   $file_mod_allowed Whether file modifications are allowed.
	 * @param string $context          The usage context.
	 */
	return apply_filters( 'file_mod_allowed', ! defined( 'DISALLOW_FILE_MODS' ) || ! DISALLOW_FILE_MODS, $context );
}

/**
 * Starts scraping edited file errors.
 *
 * @since 4.9.0
 */
function wp_start_scraping_edited_file_errors() {
	if ( ! isset( $_REQUEST['wp_scrape_key'] ) || ! isset( $_REQUEST['wp_scrape_nonce'] ) ) {
		return;
	}

$key   = substr( sanitize_key( wp_unslash( $_REQUEST['wp_scrape_key'] ) ), 0, 32 );
	$nonce = wp_unslash( $_REQUEST['wp_scrape_nonce'] );
	if ( empty( $key ) || empty( $nonce ) ) {
		return;
	}

$transient = get_transient( 'scrape_key_' . $key );
	if ( false === $transient ) {
		return;
	}

if ( $transient !== $nonce ) {
		if ( ! headers_sent() ) {
			header( 'X-Robots-Tag: noindex' );
			nocache_headers();
		}
		echo "###### wp_scraping_result_start:$key ######";
		echo wp_json_encode(
			array(
				'code'    => 'scrape_nonce_failure',
				'message' => __( 'Scrape key check failed. Please try again.' ),
			)
		);
		echo "###### wp_scraping_result_end:$key ######";
		die();
	}

if ( ! defined( 'WP_SANDBOX_SCRAPING' ) ) {
		define( 'WP_SANDBOX_SCRAPING', true );
	}

register_shutdown_function( 'wp_finalize_scraping_edited_file_errors', $key );
}

/**
 * Finalizes scraping for edited file errors.
 *
 * @since 4.9.0
 *
 * @param string $scrape_key Scrape key.
 */
function wp_finalize_scraping_edited_file_errors( $scrape_key ) {
	$error = error_get_last();

echo "\n###### wp_scraping_result_start:$scrape_key ######\n";

if ( ! empty( $error )
		&& in_array( $error['type'], array( E_CORE_ERROR, E_COMPILE_ERROR, E_ERROR, E_PARSE, E_USER_ERROR, E_RECOVERABLE_ERROR ), true )
	) {
		$error = str_replace( ABSPATH, '', $error );
		echo wp_json_encode( $error );
	} else {
		echo wp_json_encode( true );
	}

echo "\n###### wp_scraping_result_end:$scrape_key ######\n";
}

/**
 * Checks whether current request is a JSON request, or is expecting a JSON response.
 *
 * @since 5.0.0
 *
 * @return bool True if `Accepts` or `Content-Type` headers contain `application/json`.
 *              False otherwise.
 */
function wp_is_json_request() {
	if ( isset( $_SERVER['HTTP_ACCEPT'] ) && wp_is_json_media_type( $_SERVER['HTTP_ACCEPT'] ) ) {
		return true;
	}

if ( isset( $_SERVER['CONTENT_TYPE'] ) && wp_is_json_media_type( $_SERVER['CONTENT_TYPE'] ) ) {
		return true;
	}

return false;
}

/**
 * Checks whether current request is a JSONP request, or is expecting a JSONP response.
 *
 * @since 5.2.0
 *
 * @return bool True if JSONP request, false otherwise.
 */
function wp_is_jsonp_request() {
	if ( ! isset( $_GET['_jsonp'] ) ) {
		return false;
	}

if ( ! function_exists( 'wp_check_jsonp_callback' ) ) {
		require_once ABSPATH . WPINC . '/functions.php';
	}

$jsonp_callback = $_GET['_jsonp'];
	if ( ! wp_check_jsonp_callback( $jsonp_callback ) ) {
		return false;
	}

/** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */
	$jsonp_enabled = apply_filters( 'rest_jsonp_enabled', true );

return $jsonp_enabled;
}

/**
 * Checks whether a string is a valid JSON Media Type.
 *
 * @since 5.6.0
 *
 * @param string $media_type A Media Type string to check.
 * @return bool True if string is a valid JSON Media Type.
 */
function wp_is_json_media_type( $media_type ) {
	static $cache = array();

if ( ! isset( $cache[ $media_type ] ) ) {
		$cache[ $media_type ] = (bool) preg_match( '/(^|\s|,)application\/([\w!#\$&-\^\.\+]+\+)?json(\+oembed)?($|\s|;|,)/i', $media_type );
	}

return $cache[ $media_type ];
}

/**
 * Checks whether current request is an XML request, or is expecting an XML response.
 *
 * @since 5.2.0
 *
 * @return bool True if `Accepts` or `Content-Type` headers contain `text/xml`
 *              or one of the related MIME types. False otherwise.
 */
function wp_is_xml_request() {
	$accepted = array(
		'text/xml',
		'application/rss+xml',
		'application/atom+xml',
		'application/rdf+xml',
		'text/xml+oembed',
		'application/xml+oembed',
	);

if ( isset( $_SERVER['HTTP_ACCEPT'] ) ) {
		foreach ( $accepted as $type ) {
			if ( str_contains( $_SERVER['HTTP_ACCEPT'], $type ) ) {
				return true;
			}
		}
	}

if ( isset( $_SERVER['CONTENT_TYPE'] ) && in_array( $_SERVER['CONTENT_TYPE'], $accepted, true ) ) {
		return true;
	}

return false;
}

/**
 * Checks if this site is protected by HTTP Basic Auth.
 *
 * At the moment, this merely checks for the present of Basic Auth credentials. Therefore, calling
 * this function with a context different from the current context may give inaccurate results.
 * In a future release, this evaluation may be made more robust.
 *
 * Currently, this is only used by Application Passwords to prevent a conflict since it also utilizes
 * Basic Auth.
 *
 * @since 5.6.1
 *
 * @global string $pagenow The filename of the current screen.
 *
 * @param string $context The context to check for protection. Accepts 'login', 'admin', and 'front'.
 *                        Defaults to the current context.
 * @return bool Whether the site is protected by Basic Auth.
 */
function wp_is_site_protected_by_basic_auth( $context = '' ) {
	global $pagenow;

if ( ! $context ) {
		if ( 'wp-login.php' === $pagenow ) {
			$context = 'login';
		} elseif ( is_admin() ) {
			$context = 'admin';
		} else {
			$context = 'front';
		}
	}

$is_protected = ! empty( $_SERVER['PHP_AUTH_USER'] ) || ! empty( $_SERVER['PHP_AUTH_PW'] );

/**
	 * Filters whether a site is protected by HTTP Basic Auth.
	 *
	 * @since 5.6.1
	 *
	 * @param bool $is_protected Whether the site is protected by Basic Auth.
	 * @param string $context    The context to check for protection. One of 'login', 'admin', or 'front'.
	 */
	return apply_filters( 'wp_is_site_protected_by_basic_auth', $is_protected, $context );
}

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