3 * Used to set up and fix common variables and include
4 * the WordPress procedural and class library.
6 * Allows for some configuration in wp-config.php (see default-constants.php)
8 * @internal This file must be parsable by PHP4.
14 * Stores the location of the WordPress directory of functions, classes, and core content.
18 define( 'WPINC', 'wp-includes' );
20 // Include files required for initialization.
21 require( ABSPATH . WPINC . '/load.php' );
22 require( ABSPATH . WPINC . '/default-constants.php' );
25 * These can't be directly globalized in version.php. When updating,
26 * we're including version.php from another install and don't want
27 * these values to be overridden if already set.
29 global $wp_version, $wp_db_version, $tinymce_version, $required_php_version, $required_mysql_version, $wp_local_package;
30 require( ABSPATH . WPINC . '/version.php' );
33 * If not already configured, `$blog_id` will default to 1 in a single site
34 * configuration. In multisite, it will be overridden by default in ms-settings.php.
36 * @global int $blog_id
41 // Set initial default constants including WP_MEMORY_LIMIT, WP_MAX_MEMORY_LIMIT, WP_DEBUG, SCRIPT_DEBUG, WP_CONTENT_DIR and WP_CACHE.
42 wp_initial_constants();
44 // Check for the required PHP version and for the MySQL extension or a database drop-in.
45 wp_check_php_mysql_versions();
47 // Disable magic quotes at runtime. Magic quotes are added using wpdb later in wp-settings.php.
48 @ini_set( 'magic_quotes_runtime', 0 );
49 @ini_set( 'magic_quotes_sybase', 0 );
51 // WordPress calculates offsets from UTC.
52 date_default_timezone_set( 'UTC' );
54 // Turn register_globals off.
55 wp_unregister_GLOBALS();
57 // Standardize $_SERVER variables across setups.
60 // Check if we have received a request due to missing favicon.ico
63 // Check if we're in maintenance mode.
66 // Start loading timer.
69 // Check if we're in WP_DEBUG mode.
72 // For an advanced caching plugin to use. Uses a static drop-in because you would only want one.
74 WP_DEBUG ? include( WP_CONTENT_DIR . '/advanced-cache.php' ) : @include( WP_CONTENT_DIR . '/advanced-cache.php' );
76 // Define WP_LANG_DIR if not set.
79 // Load early WordPress files.
80 require( ABSPATH . WPINC . '/compat.php' );
81 require( ABSPATH . WPINC . '/functions.php' );
82 require( ABSPATH . WPINC . '/class-wp.php' );
83 require( ABSPATH . WPINC . '/class-wp-error.php' );
84 require( ABSPATH . WPINC . '/plugin.php' );
85 require( ABSPATH . WPINC . '/pomo/mo.php' );
87 // Include the wpdb class and, if present, a db.php database drop-in.
90 // Set the database table prefix and the format specifiers for database table columns.
91 $GLOBALS['table_prefix'] = $table_prefix;
94 // Start the WordPress object cache, or an external object cache if the drop-in is present.
95 wp_start_object_cache();
97 // Attach the default filters.
98 require( ABSPATH . WPINC . '/default-filters.php' );
100 // Initialize multisite if enabled.
101 if ( is_multisite() ) {
102 require( ABSPATH . WPINC . '/ms-blogs.php' );
103 require( ABSPATH . WPINC . '/ms-settings.php' );
104 } elseif ( ! defined( 'MULTISITE' ) ) {
105 define( 'MULTISITE', false );
108 register_shutdown_function( 'shutdown_action_hook' );
110 // Stop most of WordPress from being loaded if we just want the basics.
114 // Load the L10n library.
115 require_once( ABSPATH . WPINC . '/l10n.php' );
117 // Run the installer if WordPress is not installed.
120 // Load most of WordPress.
121 require( ABSPATH . WPINC . '/class-wp-walker.php' );
122 require( ABSPATH . WPINC . '/class-wp-ajax-response.php' );
123 require( ABSPATH . WPINC . '/formatting.php' );
124 require( ABSPATH . WPINC . '/capabilities.php' );
125 require( ABSPATH . WPINC . '/class-wp-roles.php' );
126 require( ABSPATH . WPINC . '/class-wp-role.php' );
127 require( ABSPATH . WPINC . '/class-wp-user.php' );
128 require( ABSPATH . WPINC . '/query.php' );
129 require( ABSPATH . WPINC . '/date.php' );
130 require( ABSPATH . WPINC . '/theme.php' );
131 require( ABSPATH . WPINC . '/class-wp-theme.php' );
132 require( ABSPATH . WPINC . '/template.php' );
133 require( ABSPATH . WPINC . '/user.php' );
134 require( ABSPATH . WPINC . '/class-wp-user-query.php' );
135 require( ABSPATH . WPINC . '/session.php' );
136 require( ABSPATH . WPINC . '/meta.php' );
137 require( ABSPATH . WPINC . '/class-wp-meta-query.php' );
138 require( ABSPATH . WPINC . '/class-wp-metadata-lazyloader.php' );
139 require( ABSPATH . WPINC . '/general-template.php' );
140 require( ABSPATH . WPINC . '/link-template.php' );
141 require( ABSPATH . WPINC . '/author-template.php' );
142 require( ABSPATH . WPINC . '/post.php' );
143 require( ABSPATH . WPINC . '/class-walker-page.php' );
144 require( ABSPATH . WPINC . '/class-walker-page-dropdown.php' );
145 require( ABSPATH . WPINC . '/class-wp-post.php' );
146 require( ABSPATH . WPINC . '/post-template.php' );
147 require( ABSPATH . WPINC . '/revision.php' );
148 require( ABSPATH . WPINC . '/post-formats.php' );
149 require( ABSPATH . WPINC . '/post-thumbnail-template.php' );
150 require( ABSPATH . WPINC . '/category.php' );
151 require( ABSPATH . WPINC . '/class-walker-category.php' );
152 require( ABSPATH . WPINC . '/class-walker-category-dropdown.php' );
153 require( ABSPATH . WPINC . '/category-template.php' );
154 require( ABSPATH . WPINC . '/comment.php' );
155 require( ABSPATH . WPINC . '/class-wp-comment.php' );
156 require( ABSPATH . WPINC . '/class-wp-comment-query.php' );
157 require( ABSPATH . WPINC . '/class-walker-comment.php' );
158 require( ABSPATH . WPINC . '/comment-template.php' );
159 require( ABSPATH . WPINC . '/rewrite.php' );
160 require( ABSPATH . WPINC . '/class-wp-rewrite.php' );
161 require( ABSPATH . WPINC . '/feed.php' );
162 require( ABSPATH . WPINC . '/bookmark.php' );
163 require( ABSPATH . WPINC . '/bookmark-template.php' );
164 require( ABSPATH . WPINC . '/kses.php' );
165 require( ABSPATH . WPINC . '/cron.php' );
166 require( ABSPATH . WPINC . '/deprecated.php' );
167 require( ABSPATH . WPINC . '/script-loader.php' );
168 require( ABSPATH . WPINC . '/taxonomy.php' );
169 require( ABSPATH . WPINC . '/class-wp-term.php' );
170 require( ABSPATH . WPINC . '/class-wp-tax-query.php' );
171 require( ABSPATH . WPINC . '/update.php' );
172 require( ABSPATH . WPINC . '/canonical.php' );
173 require( ABSPATH . WPINC . '/shortcodes.php' );
174 require( ABSPATH . WPINC . '/embed.php' );
175 require( ABSPATH . WPINC . '/class-wp-embed.php' );
176 require( ABSPATH . WPINC . '/class-wp-oembed-controller.php' );
177 require( ABSPATH . WPINC . '/media.php' );
178 require( ABSPATH . WPINC . '/http.php' );
179 require( ABSPATH . WPINC . '/class-http.php' );
180 require( ABSPATH . WPINC . '/class-wp-http-streams.php' );
181 require( ABSPATH . WPINC . '/class-wp-http-curl.php' );
182 require( ABSPATH . WPINC . '/class-wp-http-proxy.php' );
183 require( ABSPATH . WPINC . '/class-wp-http-cookie.php' );
184 require( ABSPATH . WPINC . '/class-wp-http-encoding.php' );
185 require( ABSPATH . WPINC . '/class-wp-http-response.php' );
186 require( ABSPATH . WPINC . '/widgets.php' );
187 require( ABSPATH . WPINC . '/class-wp-widget.php' );
188 require( ABSPATH . WPINC . '/class-wp-widget-factory.php' );
189 require( ABSPATH . WPINC . '/nav-menu.php' );
190 require( ABSPATH . WPINC . '/nav-menu-template.php' );
191 require( ABSPATH . WPINC . '/admin-bar.php' );
192 require( ABSPATH . WPINC . '/rest-api.php' );
193 require( ABSPATH . WPINC . '/rest-api/class-wp-rest-server.php' );
194 require( ABSPATH . WPINC . '/rest-api/class-wp-rest-response.php' );
195 require( ABSPATH . WPINC . '/rest-api/class-wp-rest-request.php' );
197 // Load multisite-specific files.
198 if ( is_multisite() ) {
199 require( ABSPATH . WPINC . '/ms-functions.php' );
200 require( ABSPATH . WPINC . '/ms-default-filters.php' );
201 require( ABSPATH . WPINC . '/ms-deprecated.php' );
204 // Define constants that rely on the API to obtain the default value.
205 // Define must-use plugin directory constants, which may be overridden in the sunrise.php drop-in.
206 wp_plugin_directory_constants();
208 $GLOBALS['wp_plugin_paths'] = array();
210 // Load must-use plugins.
211 foreach ( wp_get_mu_plugins() as $mu_plugin ) {
212 include_once( $mu_plugin );
216 // Load network activated plugins.
217 if ( is_multisite() ) {
218 foreach ( wp_get_active_network_plugins() as $network_plugin ) {
219 wp_register_plugin_realpath( $network_plugin );
220 include_once( $network_plugin );
222 unset( $network_plugin );
226 * Fires once all must-use and network-activated plugins have loaded.
230 do_action( 'muplugins_loaded' );
232 if ( is_multisite() )
233 ms_cookie_constants( );
235 // Define constants after multisite is loaded.
236 wp_cookie_constants();
238 // Define and enforce our SSL constants
241 // Create common globals.
242 require( ABSPATH . WPINC . '/vars.php' );
244 // Make taxonomies and posts available to plugins and themes.
245 // @plugin authors: warning: these get registered again on the init hook.
246 create_initial_taxonomies();
247 create_initial_post_types();
249 // Register the default theme directory root
250 register_theme_directory( get_theme_root() );
252 // Load active plugins.
253 foreach ( wp_get_active_and_valid_plugins() as $plugin ) {
254 wp_register_plugin_realpath( $plugin );
255 include_once( $plugin );
259 // Load pluggable functions.
260 require( ABSPATH . WPINC . '/pluggable.php' );
261 require( ABSPATH . WPINC . '/pluggable-deprecated.php' );
263 // Set internal encoding.
264 wp_set_internal_encoding();
266 // Run wp_cache_postload() if object cache is enabled and the function exists.
267 if ( WP_CACHE && function_exists( 'wp_cache_postload' ) )
271 * Fires once activated plugins have loaded.
273 * Pluggable functions are also available at this point in the loading order.
277 do_action( 'plugins_loaded' );
279 // Define constants which affect functionality if not already defined.
280 wp_functionality_constants();
282 // Add magic quotes and set up $_REQUEST ( $_GET + $_POST )
286 * Fires when comment cookies are sanitized.
290 do_action( 'sanitize_comment_cookies' );
293 * WordPress Query object
294 * @global WP_Query $wp_the_query
297 $GLOBALS['wp_the_query'] = new WP_Query();
300 * Holds the reference to @see $wp_the_query
301 * Use this global for WordPress queries
302 * @global WP_Query $wp_query
305 $GLOBALS['wp_query'] = $GLOBALS['wp_the_query'];
308 * Holds the WordPress Rewrite object for creating pretty URLs
309 * @global WP_Rewrite $wp_rewrite
312 $GLOBALS['wp_rewrite'] = new WP_Rewrite();
319 $GLOBALS['wp'] = new WP();
322 * WordPress Widget Factory Object
323 * @global WP_Widget_Factory $wp_widget_factory
326 $GLOBALS['wp_widget_factory'] = new WP_Widget_Factory();
329 * WordPress User Roles
330 * @global WP_Roles $wp_roles
333 $GLOBALS['wp_roles'] = new WP_Roles();
336 * Fires before the theme is loaded.
340 do_action( 'setup_theme' );
342 // Define the template related constants.
343 wp_templating_constants( );
345 // Load the default text localization domain.
346 load_default_textdomain();
348 $locale = get_locale();
349 $locale_file = WP_LANG_DIR . "/$locale.php";
350 if ( ( 0 === validate_file( $locale ) ) && is_readable( $locale_file ) )
351 require( $locale_file );
352 unset( $locale_file );
354 // Pull in locale data after loading text domain.
355 require_once( ABSPATH . WPINC . '/locale.php' );
358 * WordPress Locale object for loading locale domain date and various strings.
359 * @global WP_Locale $wp_locale
362 $GLOBALS['wp_locale'] = new WP_Locale();
364 // Load the functions for the active theme, for both parent and child theme if applicable.
365 if ( ! wp_installing() || 'wp-activate.php' === $pagenow ) {
366 if ( TEMPLATEPATH !== STYLESHEETPATH && file_exists( STYLESHEETPATH . '/functions.php' ) )
367 include( STYLESHEETPATH . '/functions.php' );
368 if ( file_exists( TEMPLATEPATH . '/functions.php' ) )
369 include( TEMPLATEPATH . '/functions.php' );
373 * Fires after the theme is loaded.
377 do_action( 'after_setup_theme' );
379 // Set up current user.
380 $GLOBALS['wp']->init();
383 * Fires after WordPress has finished loading but before any headers are sent.
385 * Most of WP is loaded at this stage, and the user is authenticated. WP continues
386 * to load on the init hook that follows (e.g. widgets), and many plugins instantiate
387 * themselves on it for all sorts of reasons (e.g. they need a user, a taxonomy, etc.).
389 * If you wish to plug an action once WP is loaded, use the wp_loaded hook below.
396 if ( is_multisite() ) {
397 if ( true !== ( $file = ms_site_check() ) ) {
405 * This hook is fired once WP, all plugins, and the theme are fully loaded and instantiated.
407 * AJAX requests should use wp-admin/admin-ajax.php. admin-ajax.php can handle requests for
408 * users not logged in.
410 * @link https://codex.wordpress.org/AJAX_in_Plugins
414 do_action( 'wp_loaded' );