ru-se.com

load.php (50040B)

---

 <?php
 /**
  * These functions are needed to load WordPress.
  *
  * @package WordPress
  */
 
 /**
  * Return 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' ), true ) ) {
 		$protocol = 'HTTP/1.0';
 	}
 	return $protocol;
 }
 
 /**
  * Fix `$_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'] ) && ( strpos( $_SERVER['SCRIPT_FILENAME'], 'php.cgi' ) == strlen( $_SERVER['SCRIPT_FILENAME'] ) - 7 ) ) {
 		$_SERVER['SCRIPT_FILENAME'] = $_SERVER['PATH_TRANSLATED'];
 	}
 
 	// Fix for Dreamhost and other PHP as CGI hosts.
 	if ( strpos( $_SERVER['SCRIPT_NAME'], 'php.cgi' ) !== false ) {
 		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 );
 
 	list( $user, $pass ) = explode( ':', $userpass );
 
 	// Now shove them in the proper keys where we're expecting later on.
 	$_SERVER['PHP_AUTH_USER'] = $user;
 	$_SERVER['PHP_AUTH_PW']   = $pass;
 }
 
 /**
  * Check for the required PHP version, and the MySQL 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 $wp_version           The WordPress version string.
  */
 function wp_check_php_mysql_versions() {
 	global $required_php_version, $wp_version;
 	$php_version = phpversion();
 
 	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 );
 	}
 
 	if ( ! extension_loaded( 'mysql' ) && ! extension_loaded( 'mysqli' ) && ! extension_loaded( 'mysqlnd' )
 		// This runs before default constants are defined, so we can't assume WP_CONTENT_DIR is set yet.
 		&& ( defined( 'WP_CONTENT_DIR' ) && ! file_exists( WP_CONTENT_DIR . '/db.php' )
 			|| ! file_exists( ABSPATH . 'wp-content/db.php' ) )
 	) {
 		require_once ABSPATH . WPINC . '/functions.php';
 		wp_load_translations_early();
 		$args = array(
 			'exit' => false,
 			'code' => 'mysql_not_found',
 		);
 		wp_die(
 			__( 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' ),
 			__( '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 ( $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' ) ) {
 		$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;
 }
 
 /**
  * Don't load all of WordPress 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;
 	}
 }
 
 /**
  * Die 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
 	);
 }
 
 /**
  * Check 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;
 	}
 
 	/**
 	 * 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;
 }
 
 /**
  * Get the time elapsed so far during this PHP script.
  *
  * Uses REQUEST_TIME_FLOAT that appeared in PHP 5.4.0.
  *
  * @since 5.8.0
  *
  * @return float Seconds since the PHP script started.
  */
 function timer_float() {
 	return microtime( true ) - $_SERVER['REQUEST_TIME_FLOAT'];
 }
 
 /**
  * Start 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;
 }
 
 /**
  * Retrieve or display 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;
 	$r         = ( function_exists( 'number_format_i18n' ) ) ? number_format_i18n( $timetotal, $precision ) : number_format( $timetotal, $precision );
 	if ( $display ) {
 		echo $r;
 	}
 	return $r;
 }
 
 /**
  * Set 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, 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 run-times. 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 );
 	}
 
 	if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || ( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) || wp_doing_ajax() || wp_is_json_request() ) {
 		ini_set( 'display_errors', 0 );
 	}
 }
 
 /**
  * Set 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' );
 			}
 		}
 	}
 }
 
 /**
  * Load the database class file and instantiate the `$wpdb` global.
  *
  * @since 2.5.0
  *
  * @global wpdb $wpdb WordPress database abstraction object.
  */
 function require_wp_db() {
 	global $wpdb;
 
 	require_once ABSPATH . WPINC . '/wp-db.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 );
 }
 
 /**
  * Set 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>'
 			)
 		);
 	}
 }
 
 /**
  * Toggle `$_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;
 }
 
 /**
  * Start 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
 	 * run-times. 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( 'users', 'userlogins', 'usermeta', 'user_meta', 'useremail', 'userslugs', 'site-transient', 'site-options', 'blog-lookup', 'blog-details', 'site-details', 'rss', 'global-posts', 'blog-id-cache', 'networks', 'sites', 'blog_meta' ) );
 		wp_cache_add_non_persistent_groups( array( 'counts', 'plugins' ) );
 	}
 
 	$first_init = false;
 }
 
 /**
  * Redirect 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_multisite() ) {
 		if ( ! is_blog_installed() && ! wp_installing() ) {
 			nocache_headers();
 
 			wp_die( __( 'The site you have requested is not installed properly. Please contact the system administrator.' ) );
 		}
 	} elseif ( ! is_blog_installed() && ! wp_installing() ) {
 		nocache_headers();
 
 		require ABSPATH . WPINC . '/kses.php';
 		require ABSPATH . WPINC . '/pluggable.php';
 
 		$link = wp_guess_url() . '/wp-admin/install.php';
 
 		wp_redirect( $link );
 		die();
 	}
 }
 
 /**
  * Retrieve 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 ( '.php' === substr( $plugin, -4 ) ) {
 			$mu_plugins[] = WPMU_PLUGIN_DIR . '/' . $plugin;
 		}
 	}
 	closedir( $dh );
 	sort( $mu_plugins );
 
 	return $mu_plugins;
 }
 
 /**
  * Retrieve 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.
 			&& '.php' === substr( $plugin, -4 )             // $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
  *
  * @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
  *
  * @return string[] Array of absolute paths to theme directories.
  */
 function wp_get_active_and_valid_themes() {
 	global $pagenow;
 
 	$themes = array();
 
 	if ( wp_installing() && 'wp-activate.php' !== $pagenow ) {
 		return $themes;
 	}
 
 	if ( TEMPLATEPATH !== STYLESHEETPATH ) {
 		$themes[] = STYLESHEETPATH;
 	}
 
 	$themes[] = TEMPLATEPATH;
 
 	/*
 	 * 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
  *
  * @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;
 }
 
 /**
  * Is WordPress 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
  *
  * @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.
 	);
 
 	/**
 	 * 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;
 }
 
 /**
  * Set 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' );
 		}
 	}
 }
 
 /**
  * Add 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();
 }
 
 /**
  * Copy an object.
  *
  * @since 2.7.0
  * @deprecated 3.2.0
  *
  * @param object $object The object to clone.
  * @return object The cloned object.
  */
 function wp_clone( $object ) {
 	// Use parens for clone to accommodate PHP 4. See #17880.
 	return clone( $object );
 }
 
 /**
  * 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;
 }
 
 /**
  * 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 blog 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;
 }
 
 /**
  * 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;
 }
 
 /**
  * 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;
 }
 
 /**
  * If 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;
 }
 
 /**
  * Retrieve 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 );
 }
 
 /**
  * Attempt 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_Locale $wp_locale WordPress date and time locale object.
  */
 function wp_load_translations_early() {
 	global $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.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();
 
 	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' );
 					if ( defined( 'WP_SETUP_CONFIG' ) && file_exists( $location . '/admin-' . $locale . '.mo' ) ) {
 						load_textdomain( 'default', $location . '/admin-' . $locale . '.mo' );
 					}
 					break 2;
 				}
 			}
 		}
 
 		break;
 	}
 
 	$wp_locale = new WP_Locale();
 }
 
 /**
  * Check or set 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' == $_SERVER['HTTPS'] ) {
 			return true;
 		}
 	} elseif ( isset( $_SERVER['SERVER_PORT'] ) && ( '443' == $_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 ( false !== strpos( $value, 'g' ) ) {
 		$bytes *= GB_IN_BYTES;
 	} elseif ( false !== strpos( $value, 'm' ) ) {
 		$bytes *= MB_IN_BYTES;
 	} elseif ( false !== strpos( $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();
 		}
 	}
 
 	// Bit operator to workaround https://bugs.php.net/bug.php?id=44936 which changes access level to 63 in PHP 5.2.6 - 5.2.17.
 	if ( isset( $ini_all[ $setting ]['access'] ) && ( INI_ALL === ( $ini_all[ $setting ]['access'] & 7 ) || INI_USER === ( $ini_all[ $setting ]['access'] & 7 ) ) ) {
 		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 );
 }
 
 /**
  * Start 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 ( get_transient( 'scrape_key_' . $key ) !== $nonce ) {
 		echo "###### wp_scraping_result_start:$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 );
 }
 
 /**
  * Finalize 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 ( false !== strpos( $_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 current page.
  *
  * @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 );
 }