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)
12 * Stores the location of the WordPress directory of functions, classes, and core content.
16 define( 'WPINC', 'wp-includes' );
18 // Include files required for initialization.
19 require( ABSPATH . WPINC . '/load.php' );
20 require( ABSPATH . WPINC . '/default-constants.php' );
21 require_once( ABSPATH . WPINC . '/plugin.php' );
24 * These can't be directly globalized in version.php. When updating,
25 * we're including version.php from another install and don't want
26 * these values to be overridden if already set.
28 global $wp_version, $wp_db_version, $tinymce_version, $required_php_version, $required_mysql_version, $wp_local_package;
29 require( ABSPATH . WPINC . '/version.php' );
32 * If not already configured, `$blog_id` will default to 1 in a single site
33 * configuration. In multisite, it will be overridden by default in ms-settings.php.
35 * @global int $blog_id
40 // Set initial default constants including WP_MEMORY_LIMIT, WP_MAX_MEMORY_LIMIT, WP_DEBUG, SCRIPT_DEBUG, WP_CONTENT_DIR and WP_CACHE.
41 wp_initial_constants();
43 // Check for the required PHP version and for the MySQL extension or a database drop-in.
44 wp_check_php_mysql_versions();
46 // Disable magic quotes at runtime. Magic quotes are added using wpdb later in wp-settings.php.
47 @ini_set( 'magic_quotes_runtime', 0 );
48 @ini_set( 'magic_quotes_sybase', 0 );
50 // WordPress calculates offsets from UTC.
51 date_default_timezone_set( 'UTC' );
53 // Turn register_globals off.
54 wp_unregister_GLOBALS();
56 // Standardize $_SERVER variables across setups.
59 // Check if we have received a request due to missing favicon.ico
62 // Check if we're in maintenance mode.
65 // Start loading timer.
68 // Check if we're in WP_DEBUG mode.
72 * Filters whether to enable loading of the advanced-cache.php drop-in.
74 * This filter runs before it can be used by plugins. It is designed for non-web
75 * run-times. If false is returned, advanced-cache.php will never be loaded.
79 * @param bool $enable_advanced_cache Whether to enable loading advanced-cache.php (if present).
82 if ( WP_CACHE && apply_filters( 'enable_loading_advanced_cache_dropin', true ) ) {
83 // For an advanced caching plugin to use. Uses a static drop-in because you would only want one.
84 WP_DEBUG ? include( WP_CONTENT_DIR . '/advanced-cache.php' ) : @include( WP_CONTENT_DIR . '/advanced-cache.php' );
86 // Re-initialize any hooks added manually by advanced-cache.php
88 $wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter );
92 // Define WP_LANG_DIR if not set.
95 // Load early WordPress files.
96 require( ABSPATH . WPINC . '/compat.php' );
97 require( ABSPATH . WPINC . '/class-wp-list-util.php' );
98 require( ABSPATH . WPINC . '/functions.php' );
99 require( ABSPATH . WPINC . '/class-wp-matchesmapregex.php' );
100 require( ABSPATH . WPINC . '/class-wp.php' );
101 require( ABSPATH . WPINC . '/class-wp-error.php' );
102 require( ABSPATH . WPINC . '/pomo/mo.php' );
103 require( ABSPATH . WPINC . '/class-phpass.php' );
105 // Include the wpdb class and, if present, a db.php database drop-in.
109 // Set the database table prefix and the format specifiers for database table columns.
110 $GLOBALS['table_prefix'] = $table_prefix;
113 // Start the WordPress object cache, or an external object cache if the drop-in is present.
114 wp_start_object_cache();
116 // Attach the default filters.
117 require( ABSPATH . WPINC . '/default-filters.php' );
119 // Initialize multisite if enabled.
120 if ( is_multisite() ) {
121 require( ABSPATH . WPINC . '/class-wp-site-query.php' );
122 require( ABSPATH . WPINC . '/class-wp-network-query.php' );
123 require( ABSPATH . WPINC . '/ms-blogs.php' );
124 require( ABSPATH . WPINC . '/ms-settings.php' );
125 } elseif ( ! defined( 'MULTISITE' ) ) {
126 define( 'MULTISITE', false );
129 register_shutdown_function( 'shutdown_action_hook' );
131 // Stop most of WordPress from being loaded if we just want the basics.
135 // Load the L10n library.
136 require_once( ABSPATH . WPINC . '/l10n.php' );
137 require_once( ABSPATH . WPINC . '/class-wp-locale.php' );
138 require_once( ABSPATH . WPINC . '/class-wp-locale-switcher.php' );
140 // Run the installer if WordPress is not installed.
143 // Load most of WordPress.
144 require( ABSPATH . WPINC . '/class-wp-walker.php' );
145 require( ABSPATH . WPINC . '/class-wp-ajax-response.php' );
146 require( ABSPATH . WPINC . '/formatting.php' );
147 require( ABSPATH . WPINC . '/capabilities.php' );
148 require( ABSPATH . WPINC . '/class-wp-roles.php' );
149 require( ABSPATH . WPINC . '/class-wp-role.php' );
150 require( ABSPATH . WPINC . '/class-wp-user.php' );
151 require( ABSPATH . WPINC . '/class-wp-query.php' );
152 require( ABSPATH . WPINC . '/query.php' );
153 require( ABSPATH . WPINC . '/date.php' );
154 require( ABSPATH . WPINC . '/theme.php' );
155 require( ABSPATH . WPINC . '/class-wp-theme.php' );
156 require( ABSPATH . WPINC . '/template.php' );
157 require( ABSPATH . WPINC . '/user.php' );
158 require( ABSPATH . WPINC . '/class-wp-user-query.php' );
159 require( ABSPATH . WPINC . '/class-wp-session-tokens.php' );
160 require( ABSPATH . WPINC . '/class-wp-user-meta-session-tokens.php' );
161 require( ABSPATH . WPINC . '/meta.php' );
162 require( ABSPATH . WPINC . '/class-wp-meta-query.php' );
163 require( ABSPATH . WPINC . '/class-wp-metadata-lazyloader.php' );
164 require( ABSPATH . WPINC . '/general-template.php' );
165 require( ABSPATH . WPINC . '/link-template.php' );
166 require( ABSPATH . WPINC . '/author-template.php' );
167 require( ABSPATH . WPINC . '/post.php' );
168 require( ABSPATH . WPINC . '/class-walker-page.php' );
169 require( ABSPATH . WPINC . '/class-walker-page-dropdown.php' );
170 require( ABSPATH . WPINC . '/class-wp-post-type.php' );
171 require( ABSPATH . WPINC . '/class-wp-post.php' );
172 require( ABSPATH . WPINC . '/post-template.php' );
173 require( ABSPATH . WPINC . '/revision.php' );
174 require( ABSPATH . WPINC . '/post-formats.php' );
175 require( ABSPATH . WPINC . '/post-thumbnail-template.php' );
176 require( ABSPATH . WPINC . '/category.php' );
177 require( ABSPATH . WPINC . '/class-walker-category.php' );
178 require( ABSPATH . WPINC . '/class-walker-category-dropdown.php' );
179 require( ABSPATH . WPINC . '/category-template.php' );
180 require( ABSPATH . WPINC . '/comment.php' );
181 require( ABSPATH . WPINC . '/class-wp-comment.php' );
182 require( ABSPATH . WPINC . '/class-wp-comment-query.php' );
183 require( ABSPATH . WPINC . '/class-walker-comment.php' );
184 require( ABSPATH . WPINC . '/comment-template.php' );
185 require( ABSPATH . WPINC . '/rewrite.php' );
186 require( ABSPATH . WPINC . '/class-wp-rewrite.php' );
187 require( ABSPATH . WPINC . '/feed.php' );
188 require( ABSPATH . WPINC . '/bookmark.php' );
189 require( ABSPATH . WPINC . '/bookmark-template.php' );
190 require( ABSPATH . WPINC . '/kses.php' );
191 require( ABSPATH . WPINC . '/cron.php' );
192 require( ABSPATH . WPINC . '/deprecated.php' );
193 require( ABSPATH . WPINC . '/script-loader.php' );
194 require( ABSPATH . WPINC . '/taxonomy.php' );
195 require( ABSPATH . WPINC . '/class-wp-taxonomy.php' );
196 require( ABSPATH . WPINC . '/class-wp-term.php' );
197 require( ABSPATH . WPINC . '/class-wp-term-query.php' );
198 require( ABSPATH . WPINC . '/class-wp-tax-query.php' );
199 require( ABSPATH . WPINC . '/update.php' );
200 require( ABSPATH . WPINC . '/canonical.php' );
201 require( ABSPATH . WPINC . '/shortcodes.php' );
202 require( ABSPATH . WPINC . '/embed.php' );
203 require( ABSPATH . WPINC . '/class-wp-embed.php' );
204 require( ABSPATH . WPINC . '/class-oembed.php' );
205 require( ABSPATH . WPINC . '/class-wp-oembed-controller.php' );
206 require( ABSPATH . WPINC . '/media.php' );
207 require( ABSPATH . WPINC . '/http.php' );
208 require( ABSPATH . WPINC . '/class-http.php' );
209 require( ABSPATH . WPINC . '/class-wp-http-streams.php' );
210 require( ABSPATH . WPINC . '/class-wp-http-curl.php' );
211 require( ABSPATH . WPINC . '/class-wp-http-proxy.php' );
212 require( ABSPATH . WPINC . '/class-wp-http-cookie.php' );
213 require( ABSPATH . WPINC . '/class-wp-http-encoding.php' );
214 require( ABSPATH . WPINC . '/class-wp-http-response.php' );
215 require( ABSPATH . WPINC . '/class-wp-http-requests-response.php' );
216 require( ABSPATH . WPINC . '/class-wp-http-requests-hooks.php' );
217 require( ABSPATH . WPINC . '/widgets.php' );
218 require( ABSPATH . WPINC . '/class-wp-widget.php' );
219 require( ABSPATH . WPINC . '/class-wp-widget-factory.php' );
220 require( ABSPATH . WPINC . '/nav-menu.php' );
221 require( ABSPATH . WPINC . '/nav-menu-template.php' );
222 require( ABSPATH . WPINC . '/admin-bar.php' );
223 require( ABSPATH . WPINC . '/rest-api.php' );
224 require( ABSPATH . WPINC . '/rest-api/class-wp-rest-server.php' );
225 require( ABSPATH . WPINC . '/rest-api/class-wp-rest-response.php' );
226 require( ABSPATH . WPINC . '/rest-api/class-wp-rest-request.php' );
227 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-controller.php' );
228 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-posts-controller.php' );
229 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-attachments-controller.php' );
230 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-post-types-controller.php' );
231 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-post-statuses-controller.php' );
232 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-revisions-controller.php' );
233 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-taxonomies-controller.php' );
234 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-terms-controller.php' );
235 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-users-controller.php' );
236 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-comments-controller.php' );
237 require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-settings-controller.php' );
238 require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-meta-fields.php' );
239 require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-comment-meta-fields.php' );
240 require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-post-meta-fields.php' );
241 require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-term-meta-fields.php' );
242 require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-user-meta-fields.php' );
244 $GLOBALS['wp_embed'] = new WP_Embed();
246 // Load multisite-specific files.
247 if ( is_multisite() ) {
248 require( ABSPATH . WPINC . '/ms-functions.php' );
249 require( ABSPATH . WPINC . '/ms-default-filters.php' );
250 require( ABSPATH . WPINC . '/ms-deprecated.php' );
253 // Define constants that rely on the API to obtain the default value.
254 // Define must-use plugin directory constants, which may be overridden in the sunrise.php drop-in.
255 wp_plugin_directory_constants();
257 $GLOBALS['wp_plugin_paths'] = array();
259 // Load must-use plugins.
260 foreach ( wp_get_mu_plugins() as $mu_plugin ) {
261 include_once( $mu_plugin );
265 // Load network activated plugins.
266 if ( is_multisite() ) {
267 foreach ( wp_get_active_network_plugins() as $network_plugin ) {
268 wp_register_plugin_realpath( $network_plugin );
269 include_once( $network_plugin );
271 unset( $network_plugin );
275 * Fires once all must-use and network-activated plugins have loaded.
279 do_action( 'muplugins_loaded' );
281 if ( is_multisite() )
282 ms_cookie_constants( );
284 // Define constants after multisite is loaded.
285 wp_cookie_constants();
287 // Define and enforce our SSL constants
290 // Create common globals.
291 require( ABSPATH . WPINC . '/vars.php' );
293 // Make taxonomies and posts available to plugins and themes.
294 // @plugin authors: warning: these get registered again on the init hook.
295 create_initial_taxonomies();
296 create_initial_post_types();
298 // Register the default theme directory root
299 register_theme_directory( get_theme_root() );
301 // Load active plugins.
302 foreach ( wp_get_active_and_valid_plugins() as $plugin ) {
303 wp_register_plugin_realpath( $plugin );
304 include_once( $plugin );
308 // Load pluggable functions.
309 require( ABSPATH . WPINC . '/pluggable.php' );
310 require( ABSPATH . WPINC . '/pluggable-deprecated.php' );
312 // Set internal encoding.
313 wp_set_internal_encoding();
315 // Run wp_cache_postload() if object cache is enabled and the function exists.
316 if ( WP_CACHE && function_exists( 'wp_cache_postload' ) )
320 * Fires once activated plugins have loaded.
322 * Pluggable functions are also available at this point in the loading order.
326 do_action( 'plugins_loaded' );
328 // Define constants which affect functionality if not already defined.
329 wp_functionality_constants();
331 // Add magic quotes and set up $_REQUEST ( $_GET + $_POST )
335 * Fires when comment cookies are sanitized.
339 do_action( 'sanitize_comment_cookies' );
342 * WordPress Query object
343 * @global WP_Query $wp_the_query
346 $GLOBALS['wp_the_query'] = new WP_Query();
349 * Holds the reference to @see $wp_the_query
350 * Use this global for WordPress queries
351 * @global WP_Query $wp_query
354 $GLOBALS['wp_query'] = $GLOBALS['wp_the_query'];
357 * Holds the WordPress Rewrite object for creating pretty URLs
358 * @global WP_Rewrite $wp_rewrite
361 $GLOBALS['wp_rewrite'] = new WP_Rewrite();
368 $GLOBALS['wp'] = new WP();
371 * WordPress Widget Factory Object
372 * @global WP_Widget_Factory $wp_widget_factory
375 $GLOBALS['wp_widget_factory'] = new WP_Widget_Factory();
378 * WordPress User Roles
379 * @global WP_Roles $wp_roles
382 $GLOBALS['wp_roles'] = new WP_Roles();
385 * Fires before the theme is loaded.
389 do_action( 'setup_theme' );
391 // Define the template related constants.
392 wp_templating_constants( );
394 // Load the default text localization domain.
395 load_default_textdomain();
397 $locale = get_locale();
398 $locale_file = WP_LANG_DIR . "/$locale.php";
399 if ( ( 0 === validate_file( $locale ) ) && is_readable( $locale_file ) )
400 require( $locale_file );
401 unset( $locale_file );
404 * WordPress Locale object for loading locale domain date and various strings.
405 * @global WP_Locale $wp_locale
408 $GLOBALS['wp_locale'] = new WP_Locale();
411 * WordPress Locale Switcher object for switching locales.
415 * @global WP_Locale_Switcher $wp_locale_switcher WordPress locale switcher object.
417 $GLOBALS['wp_locale_switcher'] = new WP_Locale_Switcher();
418 $GLOBALS['wp_locale_switcher']->init();
420 // Load the functions for the active theme, for both parent and child theme if applicable.
421 if ( ! wp_installing() || 'wp-activate.php' === $pagenow ) {
422 if ( TEMPLATEPATH !== STYLESHEETPATH && file_exists( STYLESHEETPATH . '/functions.php' ) )
423 include( STYLESHEETPATH . '/functions.php' );
424 if ( file_exists( TEMPLATEPATH . '/functions.php' ) )
425 include( TEMPLATEPATH . '/functions.php' );
429 * Fires after the theme is loaded.
433 do_action( 'after_setup_theme' );
435 // Set up current user.
436 $GLOBALS['wp']->init();
439 * Fires after WordPress has finished loading but before any headers are sent.
441 * Most of WP is loaded at this stage, and the user is authenticated. WP continues
442 * to load on the {@see 'init'} hook that follows (e.g. widgets), and many plugins instantiate
443 * themselves on it for all sorts of reasons (e.g. they need a user, a taxonomy, etc.).
445 * If you wish to plug an action once WP is loaded, use the {@see 'wp_loaded'} hook below.
452 if ( is_multisite() ) {
453 if ( true !== ( $file = ms_site_check() ) ) {
461 * This hook is fired once WP, all plugins, and the theme are fully loaded and instantiated.
463 * Ajax requests should use wp-admin/admin-ajax.php. admin-ajax.php can handle requests for
464 * users not logged in.
466 * @link https://codex.wordpress.org/AJAX_in_Plugins
470 do_action( 'wp_loaded' );