3 * These functions are needed to load WordPress.
5 * @internal This file must be parsable by PHP4.
11 * Return the HTTP protocol sent by the server.
15 * @return string The HTTP protocol. Default: HTTP/1.0.
17 function wp_get_server_protocol() {
18 $protocol = $_SERVER['SERVER_PROTOCOL'];
19 if ( ! in_array( $protocol, array( 'HTTP/1.1', 'HTTP/2', 'HTTP/2.0' ) ) ) {
20 $protocol = 'HTTP/1.0';
26 * Turn register globals off.
31 function wp_unregister_GLOBALS() {
32 if ( !ini_get( 'register_globals' ) )
35 if ( isset( $_REQUEST['GLOBALS'] ) )
36 die( 'GLOBALS overwrite attempt detected' );
38 // Variables that shouldn't be unset
39 $no_unset = array( 'GLOBALS', '_GET', '_POST', '_COOKIE', '_REQUEST', '_SERVER', '_ENV', '_FILES', 'table_prefix' );
41 $input = array_merge( $_GET, $_POST, $_COOKIE, $_SERVER, $_ENV, $_FILES, isset( $_SESSION ) && is_array( $_SESSION ) ? $_SESSION : array() );
42 foreach ( $input as $k => $v )
43 if ( !in_array( $k, $no_unset ) && isset( $GLOBALS[$k] ) ) {
44 unset( $GLOBALS[$k] );
49 * Fix `$_SERVER` variables for various setups.
54 * @global string $PHP_SELF The filename of the currently executing script,
55 * relative to the document root.
57 function wp_fix_server_vars() {
60 $default_server_values = array(
61 'SERVER_SOFTWARE' => '',
65 $_SERVER = array_merge( $default_server_values, $_SERVER );
67 // Fix for IIS when running with PHP ISAPI
68 if ( empty( $_SERVER['REQUEST_URI'] ) || ( PHP_SAPI != 'cgi-fcgi' && preg_match( '/^Microsoft-IIS\//', $_SERVER['SERVER_SOFTWARE'] ) ) ) {
71 if ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) ) {
72 $_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_ORIGINAL_URL'];
75 elseif ( isset( $_SERVER['HTTP_X_REWRITE_URL'] ) ) {
76 $_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_REWRITE_URL'];
78 // Use ORIG_PATH_INFO if there is no PATH_INFO
79 if ( !isset( $_SERVER['PATH_INFO'] ) && isset( $_SERVER['ORIG_PATH_INFO'] ) )
80 $_SERVER['PATH_INFO'] = $_SERVER['ORIG_PATH_INFO'];
82 // Some IIS + PHP configurations puts the script-name in the path-info (No need to append it twice)
83 if ( isset( $_SERVER['PATH_INFO'] ) ) {
84 if ( $_SERVER['PATH_INFO'] == $_SERVER['SCRIPT_NAME'] )
85 $_SERVER['REQUEST_URI'] = $_SERVER['PATH_INFO'];
87 $_SERVER['REQUEST_URI'] = $_SERVER['SCRIPT_NAME'] . $_SERVER['PATH_INFO'];
90 // Append the query string if it exists and isn't null
91 if ( ! empty( $_SERVER['QUERY_STRING'] ) ) {
92 $_SERVER['REQUEST_URI'] .= '?' . $_SERVER['QUERY_STRING'];
97 // Fix for PHP as CGI hosts that set SCRIPT_FILENAME to something ending in php.cgi for all requests
98 if ( isset( $_SERVER['SCRIPT_FILENAME'] ) && ( strpos( $_SERVER['SCRIPT_FILENAME'], 'php.cgi' ) == strlen( $_SERVER['SCRIPT_FILENAME'] ) - 7 ) )
99 $_SERVER['SCRIPT_FILENAME'] = $_SERVER['PATH_TRANSLATED'];
101 // Fix for Dreamhost and other PHP as CGI hosts
102 if ( strpos( $_SERVER['SCRIPT_NAME'], 'php.cgi' ) !== false )
103 unset( $_SERVER['PATH_INFO'] );
105 // Fix empty PHP_SELF
106 $PHP_SELF = $_SERVER['PHP_SELF'];
107 if ( empty( $PHP_SELF ) )
108 $_SERVER['PHP_SELF'] = $PHP_SELF = preg_replace( '/(\?.*)?$/', '', $_SERVER["REQUEST_URI"] );
112 * Check for the required PHP version, and the MySQL extension or
113 * a database drop-in.
115 * Dies if requirements are not met.
120 * @global string $required_php_version The required PHP version string.
121 * @global string $wp_version The WordPress version string.
123 function wp_check_php_mysql_versions() {
124 global $required_php_version, $wp_version;
125 $php_version = phpversion();
127 if ( version_compare( $required_php_version, $php_version, '>' ) ) {
128 wp_load_translations_early();
130 $protocol = wp_get_server_protocol();
131 header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 );
132 header( 'Content-Type: text/html; charset=utf-8' );
133 die( sprintf( __( 'Your server is running PHP version %1$s but WordPress %2$s requires at least %3$s.' ), $php_version, $wp_version, $required_php_version ) );
136 if ( ! extension_loaded( 'mysql' ) && ! extension_loaded( 'mysqli' ) && ! extension_loaded( 'mysqlnd' ) && ! file_exists( WP_CONTENT_DIR . '/db.php' ) ) {
137 wp_load_translations_early();
139 $protocol = wp_get_server_protocol();
140 header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 );
141 header( 'Content-Type: text/html; charset=utf-8' );
142 die( __( 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' ) );
147 * Don't load all of WordPress when handling a favicon.ico request.
149 * Instead, send the headers for a zero-length favicon and bail.
153 function wp_favicon_request() {
154 if ( '/favicon.ico' == $_SERVER['REQUEST_URI'] ) {
155 header('Content-Type: image/vnd.microsoft.icon');
161 * Die with a maintenance message when conditions are met.
163 * Checks for a file in the WordPress root directory named ".maintenance".
164 * This file will contain the variable $upgrading, set to the time the file
165 * was created. If the file was created less than 10 minutes ago, WordPress
166 * enters maintenance mode and displays a message.
168 * The default message can be replaced by using a drop-in (maintenance.php in
169 * the wp-content directory).
174 * @global int $upgrading the unix timestamp marking when upgrading WordPress began.
176 function wp_maintenance() {
177 if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() )
182 include( ABSPATH . '.maintenance' );
183 // If the $upgrading timestamp is older than 10 minutes, don't die.
184 if ( ( time() - $upgrading ) >= 600 )
187 if ( file_exists( WP_CONTENT_DIR . '/maintenance.php' ) ) {
188 require_once( WP_CONTENT_DIR . '/maintenance.php' );
192 wp_load_translations_early();
194 $protocol = wp_get_server_protocol();
195 header( "$protocol 503 Service Unavailable", true, 503 );
196 header( 'Content-Type: text/html; charset=utf-8' );
197 header( 'Retry-After: 600' );
200 <html xmlns="http://www.w3.org/1999/xhtml"<?php if ( is_rtl() ) echo ' dir="rtl"'; ?>>
202 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
203 <title><?php _e( 'Maintenance' ); ?></title>
207 <h1><?php _e( 'Briefly unavailable for scheduled maintenance. Check back in a minute.' ); ?></h1>
215 * Start the WordPress micro-timer.
220 * @global float $timestart Unix timestamp set at the beginning of the page load.
223 * @return bool Always returns true.
225 function timer_start() {
227 $timestart = microtime( true );
232 * Retrieve or display the time from the page start to when function is called.
236 * @global float $timestart Seconds from when timer_start() is called.
237 * @global float $timeend Seconds from when function is called.
239 * @param int|bool $display Whether to echo or return the results. Accepts 0|false for return,
240 * 1|true for echo. Default 0|false.
241 * @param int $precision The number of digits from the right of the decimal to display.
243 * @return string The "second.microsecond" finished time calculation. The number is formatted
244 * for human consumption, both localized and rounded.
246 function timer_stop( $display = 0, $precision = 3 ) {
247 global $timestart, $timeend;
248 $timeend = microtime( true );
249 $timetotal = $timeend - $timestart;
250 $r = ( function_exists( 'number_format_i18n' ) ) ? number_format_i18n( $timetotal, $precision ) : number_format( $timetotal, $precision );
257 * Set PHP error reporting based on WordPress debug settings.
259 * Uses three constants: `WP_DEBUG`, `WP_DEBUG_DISPLAY`, and `WP_DEBUG_LOG`.
260 * All three can be defined in wp-config.php. By default, `WP_DEBUG` and
261 * `WP_DEBUG_LOG` are set to false, and `WP_DEBUG_DISPLAY` is set to true.
263 * When `WP_DEBUG` is true, all PHP notices are reported. WordPress will also
264 * display internal notices: when a deprecated WordPress function, function
265 * argument, or file is used. Deprecated code may be removed from a later
268 * It is strongly recommended that plugin and theme developers use `WP_DEBUG`
269 * in their development environments.
271 * `WP_DEBUG_DISPLAY` and `WP_DEBUG_LOG` perform no function unless `WP_DEBUG`
274 * When `WP_DEBUG_DISPLAY` is true, WordPress will force errors to be displayed.
275 * `WP_DEBUG_DISPLAY` defaults to true. Defining it as null prevents WordPress
276 * from changing the global configuration setting. Defining `WP_DEBUG_DISPLAY`
277 * as false will force errors to be hidden.
279 * When `WP_DEBUG_LOG` is true, errors will be logged to debug.log in the content
282 * Errors are never displayed for XML-RPC, REST, and Ajax requests.
287 function wp_debug_mode() {
289 error_reporting( E_ALL );
291 if ( WP_DEBUG_DISPLAY )
292 ini_set( 'display_errors', 1 );
293 elseif ( null !== WP_DEBUG_DISPLAY )
294 ini_set( 'display_errors', 0 );
296 if ( WP_DEBUG_LOG ) {
297 ini_set( 'log_errors', 1 );
298 ini_set( 'error_log', WP_CONTENT_DIR . '/debug.log' );
301 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 );
304 if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || ( defined( 'DOING_AJAX' ) && DOING_AJAX ) ) {
305 @ini_set( 'display_errors', 0 );
310 * Set the location of the language directory.
312 * To set directory manually, define the `WP_LANG_DIR` constant
315 * If the language directory exists within `WP_CONTENT_DIR`, it
316 * is used. Otherwise the language directory is assumed to live
322 function wp_set_lang_dir() {
323 if ( !defined( 'WP_LANG_DIR' ) ) {
324 if ( file_exists( WP_CONTENT_DIR . '/languages' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) || !@is_dir(ABSPATH . WPINC . '/languages') ) {
326 * Server path of the language directory.
328 * No leading slash, no trailing slash, full path, not relative to ABSPATH
332 define( 'WP_LANG_DIR', WP_CONTENT_DIR . '/languages' );
333 if ( !defined( 'LANGDIR' ) ) {
334 // Old static relative path maintained for limited backwards compatibility - won't work in some cases
335 define( 'LANGDIR', 'wp-content/languages' );
339 * Server path of the language directory.
341 * No leading slash, no trailing slash, full path, not relative to `ABSPATH`.
345 define( 'WP_LANG_DIR', ABSPATH . WPINC . '/languages' );
346 if ( !defined( 'LANGDIR' ) ) {
347 // Old relative path maintained for backwards compatibility
348 define( 'LANGDIR', WPINC . '/languages' );
355 * Load the database class file and instantiate the `$wpdb` global.
359 * @global wpdb $wpdb The WordPress database class.
361 function require_wp_db() {
364 require_once( ABSPATH . WPINC . '/wp-db.php' );
365 if ( file_exists( WP_CONTENT_DIR . '/db.php' ) )
366 require_once( WP_CONTENT_DIR . '/db.php' );
368 if ( isset( $wpdb ) )
371 $wpdb = new wpdb( DB_USER, DB_PASSWORD, DB_NAME, DB_HOST );
375 * Set the database table prefix and the format specifiers for database
378 * Columns not listed here default to `%s`.
383 * @global wpdb $wpdb The WordPress database class.
384 * @global string $table_prefix The database table prefix.
386 function wp_set_wpdb_vars() {
387 global $wpdb, $table_prefix;
388 if ( !empty( $wpdb->error ) )
391 $wpdb->field_types = array( 'post_author' => '%d', 'post_parent' => '%d', 'menu_order' => '%d', 'term_id' => '%d', 'term_group' => '%d', 'term_taxonomy_id' => '%d',
392 'parent' => '%d', 'count' => '%d','object_id' => '%d', 'term_order' => '%d', 'ID' => '%d', 'comment_ID' => '%d', 'comment_post_ID' => '%d', 'comment_parent' => '%d',
393 'user_id' => '%d', 'link_id' => '%d', 'link_owner' => '%d', 'link_rating' => '%d', 'option_id' => '%d', 'blog_id' => '%d', 'meta_id' => '%d', 'post_id' => '%d',
394 'user_status' => '%d', 'umeta_id' => '%d', 'comment_karma' => '%d', 'comment_count' => '%d',
396 'active' => '%d', 'cat_id' => '%d', 'deleted' => '%d', 'lang_id' => '%d', 'mature' => '%d', 'public' => '%d', 'site_id' => '%d', 'spam' => '%d',
399 $prefix = $wpdb->set_prefix( $table_prefix );
401 if ( is_wp_error( $prefix ) ) {
402 wp_load_translations_early();
404 /* translators: 1: $table_prefix 2: wp-config.php */
405 sprintf( __( '<strong>ERROR</strong>: %1$s in %2$s can only contain numbers, letters, and underscores.' ),
406 '<code>$table_prefix</code>',
407 '<code>wp-config.php</code>'
414 * Toggle `$_wp_using_ext_object_cache` on and off without directly
419 * @global bool $_wp_using_ext_object_cache
421 * @param bool $using Whether external object cache is being used.
422 * @return bool The current 'using' setting.
424 function wp_using_ext_object_cache( $using = null ) {
425 global $_wp_using_ext_object_cache;
426 $current_using = $_wp_using_ext_object_cache;
427 if ( null !== $using )
428 $_wp_using_ext_object_cache = $using;
429 return $current_using;
433 * Start the WordPress object cache.
435 * If an object-cache.php file exists in the wp-content directory,
436 * it uses that drop-in as an external object cache.
441 * @global int $blog_id Blog ID.
443 function wp_start_object_cache() {
447 if ( ! function_exists( 'wp_cache_init' ) ) {
448 if ( file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) {
449 require_once ( WP_CONTENT_DIR . '/object-cache.php' );
450 if ( function_exists( 'wp_cache_init' ) )
451 wp_using_ext_object_cache( true );
455 } elseif ( ! wp_using_ext_object_cache() && file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) {
457 * Sometimes advanced-cache.php can load object-cache.php before
458 * it is loaded here. This breaks the function_exists check above
459 * and can result in `$_wp_using_ext_object_cache` being set
460 * incorrectly. Double check if an external cache exists.
462 wp_using_ext_object_cache( true );
465 if ( ! wp_using_ext_object_cache() )
466 require_once ( ABSPATH . WPINC . '/cache.php' );
469 * If cache supports reset, reset instead of init if already
470 * initialized. Reset signals to the cache that global IDs
471 * have changed and it may need to update keys and cleanup caches.
473 if ( ! $first_init && function_exists( 'wp_cache_switch_to_blog' ) )
474 wp_cache_switch_to_blog( $blog_id );
475 elseif ( function_exists( 'wp_cache_init' ) )
478 if ( function_exists( 'wp_cache_add_global_groups' ) ) {
479 wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'useremail', 'userslugs', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'global-posts', 'blog-id-cache', 'networks', 'sites' ) );
480 wp_cache_add_non_persistent_groups( array( 'comment', 'counts', 'plugins' ) );
485 * Redirect to the installer if WordPress is not installed.
487 * Dies with an error message when Multisite is enabled.
492 function wp_not_installed() {
493 if ( is_multisite() ) {
494 if ( ! is_blog_installed() && ! wp_installing() ) {
497 wp_die( __( 'The site you have requested is not installed properly. Please contact the system administrator.' ) );
499 } elseif ( ! is_blog_installed() && ! wp_installing() ) {
502 require( ABSPATH . WPINC . '/kses.php' );
503 require( ABSPATH . WPINC . '/pluggable.php' );
504 require( ABSPATH . WPINC . '/formatting.php' );
506 $link = wp_guess_url() . '/wp-admin/install.php';
508 wp_redirect( $link );
514 * Retrieve an array of must-use plugin files.
516 * The default directory is wp-content/mu-plugins. To change the default
517 * directory manually, define `WPMU_PLUGIN_DIR` and `WPMU_PLUGIN_URL`
523 * @return array Files to include.
525 function wp_get_mu_plugins() {
526 $mu_plugins = array();
527 if ( !is_dir( WPMU_PLUGIN_DIR ) )
529 if ( ! $dh = opendir( WPMU_PLUGIN_DIR ) )
531 while ( ( $plugin = readdir( $dh ) ) !== false ) {
532 if ( substr( $plugin, -4 ) == '.php' )
533 $mu_plugins[] = WPMU_PLUGIN_DIR . '/' . $plugin;
542 * Retrieve an array of active and valid plugin files.
544 * While upgrading or installing WordPress, no plugins are returned.
546 * The default directory is wp-content/plugins. To change the default
547 * directory manually, define `WP_PLUGIN_DIR` and `WP_PLUGIN_URL`
553 * @return array Files.
555 function wp_get_active_and_valid_plugins() {
557 $active_plugins = (array) get_option( 'active_plugins', array() );
559 // Check for hacks file if the option is enabled
560 if ( get_option( 'hack_file' ) && file_exists( ABSPATH . 'my-hacks.php' ) ) {
561 _deprecated_file( 'my-hacks.php', '1.5' );
562 array_unshift( $plugins, ABSPATH . 'my-hacks.php' );
565 if ( empty( $active_plugins ) || wp_installing() )
568 $network_plugins = is_multisite() ? wp_get_active_network_plugins() : false;
570 foreach ( $active_plugins as $plugin ) {
571 if ( ! validate_file( $plugin ) // $plugin must validate as file
572 && '.php' == substr( $plugin, -4 ) // $plugin must end with '.php'
573 && file_exists( WP_PLUGIN_DIR . '/' . $plugin ) // $plugin must exist
574 // not already included as a network plugin
575 && ( ! $network_plugins || ! in_array( WP_PLUGIN_DIR . '/' . $plugin, $network_plugins ) )
577 $plugins[] = WP_PLUGIN_DIR . '/' . $plugin;
583 * Set internal encoding.
585 * In most cases the default internal encoding is latin1, which is
586 * of no use, since we want to use the `mb_` functions for `utf-8` strings.
591 function wp_set_internal_encoding() {
592 if ( function_exists( 'mb_internal_encoding' ) ) {
593 $charset = get_option( 'blog_charset' );
594 if ( ! $charset || ! @mb_internal_encoding( $charset ) )
595 mb_internal_encoding( 'UTF-8' );
600 * Add magic quotes to `$_GET`, `$_POST`, `$_COOKIE`, and `$_SERVER`.
602 * Also forces `$_REQUEST` to be `$_GET + $_POST`. If `$_SERVER`,
603 * `$_COOKIE`, or `$_ENV` are needed, use those superglobals directly.
608 function wp_magic_quotes() {
609 // If already slashed, strip.
610 if ( get_magic_quotes_gpc() ) {
611 $_GET = stripslashes_deep( $_GET );
612 $_POST = stripslashes_deep( $_POST );
613 $_COOKIE = stripslashes_deep( $_COOKIE );
617 $_GET = add_magic_quotes( $_GET );
618 $_POST = add_magic_quotes( $_POST );
619 $_COOKIE = add_magic_quotes( $_COOKIE );
620 $_SERVER = add_magic_quotes( $_SERVER );
622 // Force REQUEST to be GET + POST.
623 $_REQUEST = array_merge( $_GET, $_POST );
627 * Runs just before PHP shuts down execution.
632 function shutdown_action_hook() {
634 * Fires just before PHP shuts down execution.
638 do_action( 'shutdown' );
649 * @param object $object The object to clone.
650 * @return object The cloned object.
652 function wp_clone( $object ) {
653 // Use parens for clone to accommodate PHP 4. See #17880
654 return clone( $object );
658 * Whether the current request is for an administrative interface page.
660 * Does not check if the user is an administrator; {@see current_user_can()}
661 * for checking roles and capabilities.
665 * @global WP_Screen $current_screen
667 * @return bool True if inside WordPress administration interface, false otherwise.
669 function is_admin() {
670 if ( isset( $GLOBALS['current_screen'] ) )
671 return $GLOBALS['current_screen']->in_admin();
672 elseif ( defined( 'WP_ADMIN' ) )
679 * Whether the current request is for a site's admininstrative interface.
683 * Does not check if the user is an administrator; {@see current_user_can()}
684 * for checking roles and capabilities.
688 * @global WP_Screen $current_screen
690 * @return bool True if inside WordPress blog administration pages.
692 function is_blog_admin() {
693 if ( isset( $GLOBALS['current_screen'] ) )
694 return $GLOBALS['current_screen']->in_admin( 'site' );
695 elseif ( defined( 'WP_BLOG_ADMIN' ) )
696 return WP_BLOG_ADMIN;
702 * Whether the current request is for the network administrative interface.
704 * e.g. `/wp-admin/network/`
706 * Does not check if the user is an administrator; {@see current_user_can()}
707 * for checking roles and capabilities.
711 * @global WP_Screen $current_screen
713 * @return bool True if inside WordPress network administration pages.
715 function is_network_admin() {
716 if ( isset( $GLOBALS['current_screen'] ) )
717 return $GLOBALS['current_screen']->in_admin( 'network' );
718 elseif ( defined( 'WP_NETWORK_ADMIN' ) )
719 return WP_NETWORK_ADMIN;
725 * Whether the current request is for a user admin screen.
727 * e.g. `/wp-admin/user/`
729 * Does not inform on whether the user is an admin! Use capability
730 * checks to tell if the user should be accessing a section or not
731 * {@see current_user_can()}.
735 * @global WP_Screen $current_screen
737 * @return bool True if inside WordPress user administration pages.
739 function is_user_admin() {
740 if ( isset( $GLOBALS['current_screen'] ) )
741 return $GLOBALS['current_screen']->in_admin( 'user' );
742 elseif ( defined( 'WP_USER_ADMIN' ) )
743 return WP_USER_ADMIN;
749 * If Multisite is enabled.
753 * @return bool True if Multisite is enabled, false otherwise.
755 function is_multisite() {
756 if ( defined( 'MULTISITE' ) )
759 if ( defined( 'SUBDOMAIN_INSTALL' ) || defined( 'VHOST' ) || defined( 'SUNRISE' ) )
766 * Retrieve the current site ID.
770 * @global int $blog_id
772 * @return int Site ID.
774 function get_current_blog_id() {
776 return absint($blog_id);
780 * Attempt an early load of translations.
782 * Used for errors encountered during the initial loading process, before
783 * the locale has been properly detected and loaded.
785 * Designed for unusual load sequences (like setup-config.php) or for when
786 * the script will then terminate with an error, otherwise there is a risk
787 * that a file can be double-included.
792 * @global string $text_direction
793 * @global WP_Locale $wp_locale The WordPress date and time locale object.
795 * @staticvar bool $loaded
797 function wp_load_translations_early() {
798 global $text_direction, $wp_locale;
800 static $loaded = false;
805 if ( function_exists( 'did_action' ) && did_action( 'init' ) )
808 // We need $wp_local_package
809 require ABSPATH . WPINC . '/version.php';
811 // Translation and localization
812 require_once ABSPATH . WPINC . '/pomo/mo.php';
813 require_once ABSPATH . WPINC . '/l10n.php';
814 require_once ABSPATH . WPINC . '/locale.php';
817 require_once ABSPATH . WPINC . '/plugin.php';
819 $locales = $locations = array();
822 if ( defined( 'WPLANG' ) ) {
828 if ( isset( $wp_local_package ) )
829 $locales[] = $wp_local_package;
834 if ( defined( 'WP_LANG_DIR' ) && @is_dir( WP_LANG_DIR ) )
835 $locations[] = WP_LANG_DIR;
837 if ( defined( 'WP_CONTENT_DIR' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) )
838 $locations[] = WP_CONTENT_DIR . '/languages';
840 if ( @is_dir( ABSPATH . 'wp-content/languages' ) )
841 $locations[] = ABSPATH . 'wp-content/languages';
843 if ( @is_dir( ABSPATH . WPINC . '/languages' ) )
844 $locations[] = ABSPATH . WPINC . '/languages';
849 $locations = array_unique( $locations );
851 foreach ( $locales as $locale ) {
852 foreach ( $locations as $location ) {
853 if ( file_exists( $location . '/' . $locale . '.mo' ) ) {
854 load_textdomain( 'default', $location . '/' . $locale . '.mo' );
855 if ( defined( 'WP_SETUP_CONFIG' ) && file_exists( $location . '/admin-' . $locale . '.mo' ) )
856 load_textdomain( 'default', $location . '/admin-' . $locale . '.mo' );
865 $wp_locale = new WP_Locale();
869 * Check or set whether WordPress is in "installation" mode.
871 * If the `WP_INSTALLING` constant is defined during the bootstrap, `wp_installing()` will default to `true`.
875 * @staticvar bool $installing
877 * @param bool $is_installing Optional. True to set WP into Installing mode, false to turn Installing mode off.
878 * Omit this parameter if you only want to fetch the current status.
879 * @return bool True if WP is installing, otherwise false. When a `$is_installing` is passed, the function will
880 * report whether WP was in installing mode prior to the change to `$is_installing`.
882 function wp_installing( $is_installing = null ) {
883 static $installing = null;
885 // Support for the `WP_INSTALLING` constant, defined before WP is loaded.
886 if ( is_null( $installing ) ) {
887 $installing = defined( 'WP_INSTALLING' ) && WP_INSTALLING;
890 if ( ! is_null( $is_installing ) ) {
891 $old_installing = $installing;
892 $installing = $is_installing;
893 return (bool) $old_installing;
896 return (bool) $installing;