3 * These functions are needed to load WordPress.
9 * Return the HTTP protocol sent by the server.
13 * @return string The HTTP protocol. Default: HTTP/1.0.
15 function wp_get_server_protocol() {
16 $protocol = $_SERVER['SERVER_PROTOCOL'];
17 if ( ! in_array( $protocol, array( 'HTTP/1.1', 'HTTP/2', 'HTTP/2.0' ) ) ) {
18 $protocol = 'HTTP/1.0';
24 * Turn register globals off.
30 function wp_unregister_GLOBALS() {
31 if ( !ini_get( 'register_globals' ) )
34 if ( isset( $_REQUEST['GLOBALS'] ) )
35 die( 'GLOBALS overwrite attempt detected' );
37 // Variables that shouldn't be unset
38 $no_unset = array( 'GLOBALS', '_GET', '_POST', '_COOKIE', '_REQUEST', '_SERVER', '_ENV', '_FILES', 'table_prefix' );
40 $input = array_merge( $_GET, $_POST, $_COOKIE, $_SERVER, $_ENV, $_FILES, isset( $_SESSION ) && is_array( $_SESSION ) ? $_SESSION : array() );
41 foreach ( $input as $k => $v )
42 if ( !in_array( $k, $no_unset ) && isset( $GLOBALS[$k] ) ) {
43 unset( $GLOBALS[$k] );
48 * Fix `$_SERVER` variables for various setups.
53 * @global string $PHP_SELF The filename of the currently executing script,
54 * 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', $protocol ), true, 500 );
132 header( 'Content-Type: text/html; charset=utf-8' );
133 // translators: 1: Current PHP version number, 2: WordPress version number, 3: Minimum required PHP version number
134 die( sprintf( __( 'Your server is running PHP version %1$s but WordPress %2$s requires at least %3$s.' ), $php_version, $wp_version, $required_php_version ) );
137 if ( ! extension_loaded( 'mysql' ) && ! extension_loaded( 'mysqli' ) && ! extension_loaded( 'mysqlnd' ) && ! file_exists( WP_CONTENT_DIR . '/db.php' ) ) {
138 wp_load_translations_early();
140 $protocol = wp_get_server_protocol();
141 header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 );
142 header( 'Content-Type: text/html; charset=utf-8' );
143 die( __( 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' ) );
148 * Don't load all of WordPress when handling a favicon.ico request.
150 * Instead, send the headers for a zero-length favicon and bail.
154 function wp_favicon_request() {
155 if ( '/favicon.ico' == $_SERVER['REQUEST_URI'] ) {
156 header('Content-Type: image/vnd.microsoft.icon');
162 * Die with a maintenance message when conditions are met.
164 * Checks for a file in the WordPress root directory named ".maintenance".
165 * This file will contain the variable $upgrading, set to the time the file
166 * was created. If the file was created less than 10 minutes ago, WordPress
167 * enters maintenance mode and displays a message.
169 * The default message can be replaced by using a drop-in (maintenance.php in
170 * the wp-content directory).
175 * @global int $upgrading the unix timestamp marking when upgrading WordPress began.
177 function wp_maintenance() {
178 if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() )
183 include( ABSPATH . '.maintenance' );
184 // If the $upgrading timestamp is older than 10 minutes, don't die.
185 if ( ( time() - $upgrading ) >= 600 )
189 * Filters whether to enable maintenance mode.
191 * This filter runs before it can be used by plugins. It is designed for
192 * non-web runtimes. If this filter returns true, maintenance mode will be
193 * active and the request will end. If false, the request will be allowed to
194 * continue processing even if maintenance mode should be active.
198 * @param bool $enable_checks Whether to enable maintenance mode. Default true.
199 * @param int $upgrading The timestamp set in the .maintenance file.
201 if ( ! apply_filters( 'enable_maintenance_mode', true, $upgrading ) ) {
205 if ( file_exists( WP_CONTENT_DIR . '/maintenance.php' ) ) {
206 require_once( WP_CONTENT_DIR . '/maintenance.php' );
210 wp_load_translations_early();
212 $protocol = wp_get_server_protocol();
213 header( "$protocol 503 Service Unavailable", true, 503 );
214 header( 'Content-Type: text/html; charset=utf-8' );
215 header( 'Retry-After: 600' );
218 <html xmlns="http://www.w3.org/1999/xhtml"<?php if ( is_rtl() ) echo ' dir="rtl"'; ?>>
220 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
221 <title><?php _e( 'Maintenance' ); ?></title>
225 <h1><?php _e( 'Briefly unavailable for scheduled maintenance. Check back in a minute.' ); ?></h1>
233 * Start the WordPress micro-timer.
238 * @global float $timestart Unix timestamp set at the beginning of the page load.
241 * @return bool Always returns true.
243 function timer_start() {
245 $timestart = microtime( true );
250 * Retrieve or display the time from the page start to when function is called.
254 * @global float $timestart Seconds from when timer_start() is called.
255 * @global float $timeend Seconds from when function is called.
257 * @param int|bool $display Whether to echo or return the results. Accepts 0|false for return,
258 * 1|true for echo. Default 0|false.
259 * @param int $precision The number of digits from the right of the decimal to display.
261 * @return string The "second.microsecond" finished time calculation. The number is formatted
262 * for human consumption, both localized and rounded.
264 function timer_stop( $display = 0, $precision = 3 ) {
265 global $timestart, $timeend;
266 $timeend = microtime( true );
267 $timetotal = $timeend - $timestart;
268 $r = ( function_exists( 'number_format_i18n' ) ) ? number_format_i18n( $timetotal, $precision ) : number_format( $timetotal, $precision );
275 * Set PHP error reporting based on WordPress debug settings.
277 * Uses three constants: `WP_DEBUG`, `WP_DEBUG_DISPLAY`, and `WP_DEBUG_LOG`.
278 * All three can be defined in wp-config.php. By default, `WP_DEBUG` and
279 * `WP_DEBUG_LOG` are set to false, and `WP_DEBUG_DISPLAY` is set to true.
281 * When `WP_DEBUG` is true, all PHP notices are reported. WordPress will also
282 * display internal notices: when a deprecated WordPress function, function
283 * argument, or file is used. Deprecated code may be removed from a later
286 * It is strongly recommended that plugin and theme developers use `WP_DEBUG`
287 * in their development environments.
289 * `WP_DEBUG_DISPLAY` and `WP_DEBUG_LOG` perform no function unless `WP_DEBUG`
292 * When `WP_DEBUG_DISPLAY` is true, WordPress will force errors to be displayed.
293 * `WP_DEBUG_DISPLAY` defaults to true. Defining it as null prevents WordPress
294 * from changing the global configuration setting. Defining `WP_DEBUG_DISPLAY`
295 * as false will force errors to be hidden.
297 * When `WP_DEBUG_LOG` is true, errors will be logged to debug.log in the content
300 * Errors are never displayed for XML-RPC, REST, and Ajax requests.
305 function wp_debug_mode() {
307 * Filters whether to allow the debug mode check to occur.
309 * This filter runs before it can be used by plugins. It is designed for
310 * non-web run-times. Returning false causes the `WP_DEBUG` and related
311 * constants to not be checked and the default php values for errors
312 * will be used unless you take care to update them yourself.
316 * @param bool $enable_debug_mode Whether to enable debug mode checks to occur. Default true.
318 if ( ! apply_filters( 'enable_wp_debug_mode_checks', true ) ){
323 error_reporting( E_ALL );
325 if ( WP_DEBUG_DISPLAY )
326 ini_set( 'display_errors', 1 );
327 elseif ( null !== WP_DEBUG_DISPLAY )
328 ini_set( 'display_errors', 0 );
330 if ( WP_DEBUG_LOG ) {
331 ini_set( 'log_errors', 1 );
332 ini_set( 'error_log', WP_CONTENT_DIR . '/debug.log' );
335 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 );
338 if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || ( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) || wp_doing_ajax() ) {
339 @ini_set( 'display_errors', 0 );
344 * Set the location of the language directory.
346 * To set directory manually, define the `WP_LANG_DIR` constant
349 * If the language directory exists within `WP_CONTENT_DIR`, it
350 * is used. Otherwise the language directory is assumed to live
356 function wp_set_lang_dir() {
357 if ( !defined( 'WP_LANG_DIR' ) ) {
358 if ( file_exists( WP_CONTENT_DIR . '/languages' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) || !@is_dir(ABSPATH . WPINC . '/languages') ) {
360 * Server path of the language directory.
362 * No leading slash, no trailing slash, full path, not relative to ABSPATH
366 define( 'WP_LANG_DIR', WP_CONTENT_DIR . '/languages' );
367 if ( !defined( 'LANGDIR' ) ) {
368 // Old static relative path maintained for limited backward compatibility - won't work in some cases.
369 define( 'LANGDIR', 'wp-content/languages' );
373 * Server path of the language directory.
375 * No leading slash, no trailing slash, full path, not relative to `ABSPATH`.
379 define( 'WP_LANG_DIR', ABSPATH . WPINC . '/languages' );
380 if ( !defined( 'LANGDIR' ) ) {
381 // Old relative path maintained for backward compatibility.
382 define( 'LANGDIR', WPINC . '/languages' );
389 * Load the database class file and instantiate the `$wpdb` global.
393 * @global wpdb $wpdb The WordPress database class.
395 function require_wp_db() {
398 require_once( ABSPATH . WPINC . '/wp-db.php' );
399 if ( file_exists( WP_CONTENT_DIR . '/db.php' ) )
400 require_once( WP_CONTENT_DIR . '/db.php' );
402 if ( isset( $wpdb ) ) {
406 $wpdb = new wpdb( DB_USER, DB_PASSWORD, DB_NAME, DB_HOST );
410 * Set the database table prefix and the format specifiers for database
413 * Columns not listed here default to `%s`.
418 * @global wpdb $wpdb The WordPress database class.
419 * @global string $table_prefix The database table prefix.
421 function wp_set_wpdb_vars() {
422 global $wpdb, $table_prefix;
423 if ( !empty( $wpdb->error ) )
426 $wpdb->field_types = array( 'post_author' => '%d', 'post_parent' => '%d', 'menu_order' => '%d', 'term_id' => '%d', 'term_group' => '%d', 'term_taxonomy_id' => '%d',
427 'parent' => '%d', 'count' => '%d','object_id' => '%d', 'term_order' => '%d', 'ID' => '%d', 'comment_ID' => '%d', 'comment_post_ID' => '%d', 'comment_parent' => '%d',
428 'user_id' => '%d', 'link_id' => '%d', 'link_owner' => '%d', 'link_rating' => '%d', 'option_id' => '%d', 'blog_id' => '%d', 'meta_id' => '%d', 'post_id' => '%d',
429 'user_status' => '%d', 'umeta_id' => '%d', 'comment_karma' => '%d', 'comment_count' => '%d',
431 'active' => '%d', 'cat_id' => '%d', 'deleted' => '%d', 'lang_id' => '%d', 'mature' => '%d', 'public' => '%d', 'site_id' => '%d', 'spam' => '%d',
434 $prefix = $wpdb->set_prefix( $table_prefix );
436 if ( is_wp_error( $prefix ) ) {
437 wp_load_translations_early();
439 /* translators: 1: $table_prefix 2: wp-config.php */
440 sprintf( __( '<strong>ERROR</strong>: %1$s in %2$s can only contain numbers, letters, and underscores.' ),
441 '<code>$table_prefix</code>',
442 '<code>wp-config.php</code>'
449 * Toggle `$_wp_using_ext_object_cache` on and off without directly
454 * @global bool $_wp_using_ext_object_cache
456 * @param bool $using Whether external object cache is being used.
457 * @return bool The current 'using' setting.
459 function wp_using_ext_object_cache( $using = null ) {
460 global $_wp_using_ext_object_cache;
461 $current_using = $_wp_using_ext_object_cache;
462 if ( null !== $using )
463 $_wp_using_ext_object_cache = $using;
464 return $current_using;
468 * Start the WordPress object cache.
470 * If an object-cache.php file exists in the wp-content directory,
471 * it uses that drop-in as an external object cache.
476 function wp_start_object_cache() {
480 if ( ! function_exists( 'wp_cache_init' ) ) {
481 if ( file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) {
482 require_once ( WP_CONTENT_DIR . '/object-cache.php' );
483 if ( function_exists( 'wp_cache_init' ) ) {
484 wp_using_ext_object_cache( true );
487 // Re-initialize any hooks added manually by object-cache.php
489 $wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter );
494 } elseif ( ! wp_using_ext_object_cache() && file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) {
496 * Sometimes advanced-cache.php can load object-cache.php before
497 * it is loaded here. This breaks the function_exists check above
498 * and can result in `$_wp_using_ext_object_cache` being set
499 * incorrectly. Double check if an external cache exists.
501 wp_using_ext_object_cache( true );
504 if ( ! wp_using_ext_object_cache() ) {
505 require_once ( ABSPATH . WPINC . '/cache.php' );
509 * If cache supports reset, reset instead of init if already
510 * initialized. Reset signals to the cache that global IDs
511 * have changed and it may need to update keys and cleanup caches.
513 if ( ! $first_init && function_exists( 'wp_cache_switch_to_blog' ) ) {
514 wp_cache_switch_to_blog( get_current_blog_id() );
515 } elseif ( function_exists( 'wp_cache_init' ) ) {
519 if ( function_exists( 'wp_cache_add_global_groups' ) ) {
520 wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'useremail', 'userslugs', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'site-details', 'rss', 'global-posts', 'blog-id-cache', 'networks', 'sites' ) );
521 wp_cache_add_non_persistent_groups( array( 'counts', 'plugins' ) );
526 * Redirect to the installer if WordPress is not installed.
528 * Dies with an error message when Multisite is enabled.
533 function wp_not_installed() {
534 if ( is_multisite() ) {
535 if ( ! is_blog_installed() && ! wp_installing() ) {
538 wp_die( __( 'The site you have requested is not installed properly. Please contact the system administrator.' ) );
540 } elseif ( ! is_blog_installed() && ! wp_installing() ) {
543 require( ABSPATH . WPINC . '/kses.php' );
544 require( ABSPATH . WPINC . '/pluggable.php' );
545 require( ABSPATH . WPINC . '/formatting.php' );
547 $link = wp_guess_url() . '/wp-admin/install.php';
549 wp_redirect( $link );
555 * Retrieve an array of must-use plugin files.
557 * The default directory is wp-content/mu-plugins. To change the default
558 * directory manually, define `WPMU_PLUGIN_DIR` and `WPMU_PLUGIN_URL`
564 * @return array Files to include.
566 function wp_get_mu_plugins() {
567 $mu_plugins = array();
568 if ( !is_dir( WPMU_PLUGIN_DIR ) )
570 if ( ! $dh = opendir( WPMU_PLUGIN_DIR ) )
572 while ( ( $plugin = readdir( $dh ) ) !== false ) {
573 if ( substr( $plugin, -4 ) == '.php' )
574 $mu_plugins[] = WPMU_PLUGIN_DIR . '/' . $plugin;
583 * Retrieve an array of active and valid plugin files.
585 * While upgrading or installing WordPress, no plugins are returned.
587 * The default directory is wp-content/plugins. To change the default
588 * directory manually, define `WP_PLUGIN_DIR` and `WP_PLUGIN_URL`
594 * @return array Files.
596 function wp_get_active_and_valid_plugins() {
598 // $active_plugins = (array) get_option( 'active_plugins', array() );
600 $active_plugins = array();
601 $active_plugins[] = 'wp-multibyte-patch/wp-multibyte-patch.php';
603 // Check for hacks file if the option is enabled
604 if ( get_option( 'hack_file' ) && file_exists( ABSPATH . 'my-hacks.php' ) ) {
605 _deprecated_file( 'my-hacks.php', '1.5.0' );
606 array_unshift( $plugins, ABSPATH . 'my-hacks.php' );
609 if ( empty( $active_plugins ) || wp_installing() )
612 $network_plugins = is_multisite() ? wp_get_active_network_plugins() : false;
614 foreach ( $active_plugins as $plugin ) {
615 if ( ! validate_file( $plugin ) // $plugin must validate as file
616 && '.php' == substr( $plugin, -4 ) // $plugin must end with '.php'
617 && file_exists( WP_PLUGIN_DIR . '/' . $plugin ) // $plugin must exist
618 // not already included as a network plugin
619 && ( ! $network_plugins || ! in_array( WP_PLUGIN_DIR . '/' . $plugin, $network_plugins ) )
621 $plugins[] = WP_PLUGIN_DIR . '/' . $plugin;
627 * Set internal encoding.
629 * In most cases the default internal encoding is latin1, which is
630 * of no use, since we want to use the `mb_` functions for `utf-8` strings.
635 function wp_set_internal_encoding() {
636 if ( function_exists( 'mb_internal_encoding' ) ) {
637 $charset = get_option( 'blog_charset' );
638 if ( ! $charset || ! @mb_internal_encoding( $charset ) )
639 mb_internal_encoding( 'UTF-8' );
644 * Add magic quotes to `$_GET`, `$_POST`, `$_COOKIE`, and `$_SERVER`.
646 * Also forces `$_REQUEST` to be `$_GET + $_POST`. If `$_SERVER`,
647 * `$_COOKIE`, or `$_ENV` are needed, use those superglobals directly.
652 function wp_magic_quotes() {
653 // If already slashed, strip.
654 if ( get_magic_quotes_gpc() ) {
655 $_GET = stripslashes_deep( $_GET );
656 $_POST = stripslashes_deep( $_POST );
657 $_COOKIE = stripslashes_deep( $_COOKIE );
661 $_GET = add_magic_quotes( $_GET );
662 $_POST = add_magic_quotes( $_POST );
663 $_COOKIE = add_magic_quotes( $_COOKIE );
664 $_SERVER = add_magic_quotes( $_SERVER );
666 // Force REQUEST to be GET + POST.
667 $_REQUEST = array_merge( $_GET, $_POST );
671 * Runs just before PHP shuts down execution.
676 function shutdown_action_hook() {
678 * Fires just before PHP shuts down execution.
682 // WooCommerceセッション保存処理等
683 do_action( 'shutdown' );
694 * @param object $object The object to clone.
695 * @return object The cloned object.
697 function wp_clone( $object ) {
698 // Use parens for clone to accommodate PHP 4. See #17880
699 return clone( $object );
703 * Whether the current request is for an administrative interface page.
705 * Does not check if the user is an administrator; current_user_can()
706 * for checking roles and capabilities.
710 * @global WP_Screen $current_screen
712 * @return bool True if inside WordPress administration interface, false otherwise.
714 function is_admin() {
715 if ( isset( $GLOBALS['current_screen'] ) )
716 return $GLOBALS['current_screen']->in_admin();
717 elseif ( defined( 'WP_ADMIN' ) )
724 * Whether the current request is for a site's admininstrative interface.
728 * Does not check if the user is an administrator; current_user_can()
729 * for checking roles and capabilities.
733 * @global WP_Screen $current_screen
735 * @return bool True if inside WordPress blog administration pages.
737 /*function is_blog_admin() {
738 if ( isset( $GLOBALS['current_screen'] ) )
739 return $GLOBALS['current_screen']->in_admin( 'site' );
740 elseif ( defined( 'WP_BLOG_ADMIN' ) )
741 return WP_BLOG_ADMIN;
747 * Whether the current request is for the network administrative interface.
749 * e.g. `/wp-admin/network/`
751 * Does not check if the user is an administrator; current_user_can()
752 * for checking roles and capabilities.
756 * @global WP_Screen $current_screen
758 * @return bool True if inside WordPress network administration pages.
760 function is_network_admin() {
761 if ( isset( $GLOBALS['current_screen'] ) )
762 return $GLOBALS['current_screen']->in_admin( 'network' );
763 elseif ( defined( 'WP_NETWORK_ADMIN' ) )
764 return WP_NETWORK_ADMIN;
770 * Whether the current request is for a user admin screen.
772 * e.g. `/wp-admin/user/`
774 * Does not inform on whether the user is an admin! Use capability
775 * checks to tell if the user should be accessing a section or not
776 * current_user_can().
780 * @global WP_Screen $current_screen
782 * @return bool True if inside WordPress user administration pages.
784 function is_user_admin() {
785 if ( isset( $GLOBALS['current_screen'] ) )
786 return $GLOBALS['current_screen']->in_admin( 'user' );
787 elseif ( defined( 'WP_USER_ADMIN' ) )
788 return WP_USER_ADMIN;
794 * If Multisite is enabled.
798 * @return bool True if Multisite is enabled, false otherwise.
800 function is_multisite() {
801 if ( defined( 'MULTISITE' ) )
804 if ( defined( 'SUBDOMAIN_INSTALL' ) || defined( 'VHOST' ) || defined( 'SUNRISE' ) )
811 * Retrieve the current site ID.
815 * @global int $blog_id
817 * @return int Site ID.
819 function get_current_blog_id() {
821 return absint($blog_id);
825 * Retrieves the current network ID.
829 * @return int The ID of the current network.
831 function get_current_network_id() {
832 if ( ! is_multisite() ) {
836 $current_network = get_network();
838 if ( ! isset( $current_network->id ) ) {
839 return get_main_network_id();
842 return absint( $current_network->id );
846 * Attempt an early load of translations.
848 * Used for errors encountered during the initial loading process, before
849 * the locale has been properly detected and loaded.
851 * Designed for unusual load sequences (like setup-config.php) or for when
852 * the script will then terminate with an error, otherwise there is a risk
853 * that a file can be double-included.
858 * @global WP_Locale $wp_locale The WordPress date and time locale object.
860 * @staticvar bool $loaded
862 function wp_load_translations_early() {
865 static $loaded = false;
870 if ( function_exists( 'did_action' ) && did_action( 'init' ) )
873 // We need $wp_local_package
874 require ABSPATH . WPINC . '/version.php';
876 // Translation and localization
877 require_once ABSPATH . WPINC . '/pomo/mo.php';
878 require_once ABSPATH . WPINC . '/l10n.php';
879 require_once ABSPATH . WPINC . '/class-wp-locale.php';
880 require_once ABSPATH . WPINC . '/class-wp-locale-switcher.php';
883 require_once ABSPATH . WPINC . '/plugin.php';
885 $locales = $locations = array();
888 if ( defined( 'WPLANG' ) ) {
894 if ( isset( $wp_local_package ) )
895 $locales[] = $wp_local_package;
900 if ( defined( 'WP_LANG_DIR' ) && @is_dir( WP_LANG_DIR ) )
901 $locations[] = WP_LANG_DIR;
903 if ( defined( 'WP_CONTENT_DIR' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) )
904 $locations[] = WP_CONTENT_DIR . '/languages';
906 if ( @is_dir( ABSPATH . 'wp-content/languages' ) )
907 $locations[] = ABSPATH . 'wp-content/languages';
909 if ( @is_dir( ABSPATH . WPINC . '/languages' ) )
910 $locations[] = ABSPATH . WPINC . '/languages';
915 $locations = array_unique( $locations );
917 foreach ( $locales as $locale ) {
918 foreach ( $locations as $location ) {
919 if ( file_exists( $location . '/' . $locale . '.mo' ) ) {
920 load_textdomain( 'default', $location . '/' . $locale . '.mo' );
921 if ( defined( 'WP_SETUP_CONFIG' ) && file_exists( $location . '/admin-' . $locale . '.mo' ) )
922 load_textdomain( 'default', $location . '/admin-' . $locale . '.mo' );
931 $wp_locale = new WP_Locale();
935 * Check or set whether WordPress is in "installation" mode.
937 * If the `WP_INSTALLING` constant is defined during the bootstrap, `wp_installing()` will default to `true`.
941 * @staticvar bool $installing
943 * @param bool $is_installing Optional. True to set WP into Installing mode, false to turn Installing mode off.
944 * Omit this parameter if you only want to fetch the current status.
945 * @return bool True if WP is installing, otherwise false. When a `$is_installing` is passed, the function will
946 * report whether WP was in installing mode prior to the change to `$is_installing`.
948 function wp_installing( $is_installing = null ) {
949 static $installing = null;
951 // Support for the `WP_INSTALLING` constant, defined before WP is loaded.
952 if ( is_null( $installing ) ) {
953 $installing = defined( 'WP_INSTALLING' ) && WP_INSTALLING;
956 if ( ! is_null( $is_installing ) ) {
957 $old_installing = $installing;
958 $installing = $is_installing;
959 return (bool) $old_installing;
962 return (bool) $installing;
966 * Determines if SSL is used.
969 * @since 4.6.0 Moved from functions.php to load.php.
971 * @return bool True if SSL, otherwise false.
974 if ( isset( $_SERVER['HTTPS'] ) ) {
975 if ( 'on' == strtolower( $_SERVER['HTTPS'] ) ) {
979 if ( '1' == $_SERVER['HTTPS'] ) {
982 } elseif ( isset($_SERVER['SERVER_PORT'] ) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
989 * Converts a shorthand byte value to an integer byte value.
992 * @since 4.6.0 Moved from media.php to load.php.
994 * @link https://secure.php.net/manual/en/function.ini-get.php
995 * @link https://secure.php.net/manual/en/faq.using.php#faq.using.shorthandbytes
997 * @param string $value A (PHP ini) byte value, either shorthand or ordinary.
998 * @return int An integer byte value.
1000 function wp_convert_hr_to_bytes( $value ) {
1001 $value = strtolower( trim( $value ) );
1002 $bytes = (int) $value;
1004 if ( false !== strpos( $value, 'g' ) ) {
1005 $bytes *= GB_IN_BYTES;
1006 } elseif ( false !== strpos( $value, 'm' ) ) {
1007 $bytes *= MB_IN_BYTES;
1008 } elseif ( false !== strpos( $value, 'k' ) ) {
1009 $bytes *= KB_IN_BYTES;
1012 // Deal with large (float) values which run into the maximum integer size.
1013 return min( $bytes, PHP_INT_MAX );
1017 * Determines whether a PHP ini value is changeable at runtime.
1021 * @link https://secure.php.net/manual/en/function.ini-get-all.php
1023 * @param string $setting The name of the ini setting to check.
1024 * @return bool True if the value is changeable at runtime. False otherwise.
1026 function wp_is_ini_value_changeable( $setting ) {
1029 if ( ! isset( $ini_all ) ) {
1031 // Sometimes `ini_get_all()` is disabled via the `disable_functions` option for "security purposes".
1032 if ( function_exists( 'ini_get_all' ) ) {
1033 $ini_all = ini_get_all();
1037 // 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.
1038 if ( isset( $ini_all[ $setting ]['access'] ) && ( INI_ALL === ( $ini_all[ $setting ]['access'] & 7 ) || INI_USER === ( $ini_all[ $setting ]['access'] & 7 ) ) ) {
1042 // If we were unable to retrieve the details, fail gracefully to assume it's changeable.
1043 if ( ! is_array( $ini_all ) ) {
1051 * Determines whether the current request is a WordPress Ajax request.
1055 * @return bool True if it's a WordPress Ajax request, false otherwise.
1057 function wp_doing_ajax() {
1058 // AJAX起動かどうかは$_GET['wc-ajax']の値があるかどうかで判断される
1060 * Filters whether the current request is a WordPress Ajax request.
1064 * @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request.
1066 return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX );
1070 * Check whether variable is a WordPress Error.
1072 * Returns true if $thing is an object of the WP_Error class.
1076 * @param mixed $thing Check if unknown variable is a WP_Error object.
1077 * @return bool True, if WP_Error. False, if not WP_Error.
1079 function is_wp_error( $thing ) {
1080 return ( $thing instanceof WP_Error );