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<?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 $wp_version           The WordPress version string.
 */
function wp_check_php_mysql_versions() {
	global $required_php_version, $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 );
	}

// 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;
	}

/**
	 * 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.
 *
 * 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'];
}

/**
 * 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',
				'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.
			&& ( ! $net