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' );
23 require( ABSPATH . WPINC . '/version.php' );
25 // Set initial default constants including WP_MEMORY_LIMIT, WP_MAX_MEMORY_LIMIT, WP_DEBUG, WP_CONTENT_DIR and WP_CACHE.
26 wp_initial_constants( );
28 // Check for the required PHP version and for the MySQL extension or a database drop-in.
29 wp_check_php_mysql_versions();
31 // Disable magic quotes at runtime. Magic quotes are added using wpdb later in wp-settings.php.
32 @ini_set( 'magic_quotes_runtime', 0 );
33 @ini_set( 'magic_quotes_sybase', 0 );
35 // Set default timezone in PHP 5.
36 if ( function_exists( 'date_default_timezone_set' ) )
37 date_default_timezone_set( 'UTC' );
39 // Turn register_globals off.
40 wp_unregister_GLOBALS();
42 // Ensure these global variables do not exist so they do not interfere with WordPress.
43 unset( $wp_filter, $cache_lastcommentmodified );
45 // Standardize $_SERVER variables across setups.
48 // Check if we have received a request due to missing favicon.ico
51 // Check if we're in maintenance mode.
54 // Start loading timer.
57 // Check if we're in WP_DEBUG mode.
60 // For an advanced caching plugin to use. Uses a static drop-in because you would only want one.
62 WP_DEBUG ? include( WP_CONTENT_DIR . '/advanced-cache.php' ) : @include( WP_CONTENT_DIR . '/advanced-cache.php' );
64 // Define WP_LANG_DIR if not set.
67 // Load early WordPress files.
68 require( ABSPATH . WPINC . '/compat.php' );
69 require( ABSPATH . WPINC . '/functions.php' );
70 require( ABSPATH . WPINC . '/class-wp.php' );
71 require( ABSPATH . WPINC . '/class-wp-error.php' );
72 require( ABSPATH . WPINC . '/plugin.php' );
74 // Include the wpdb class and, if present, a db.php database drop-in.
77 // Set the database table prefix and the format specifiers for database table columns.
78 $GLOBALS['table_prefix'] = $table_prefix;
81 // Start the WordPress object cache, or an external object cache if the drop-in is present.
82 wp_start_object_cache();
84 // Load early WordPress files.
85 require( ABSPATH . WPINC . '/default-filters.php' );
86 require( ABSPATH . WPINC . '/pomo/mo.php' );
88 // Initialize multisite if enabled.
89 if ( is_multisite() ) {
90 require( ABSPATH . WPINC . '/ms-blogs.php' );
91 require( ABSPATH . WPINC . '/ms-settings.php' );
92 } elseif ( ! defined( 'MULTISITE' ) ) {
93 define( 'MULTISITE', false );
96 register_shutdown_function( 'shutdown_action_hook' );
98 // Stop most of WordPress from being loaded if we just want the basics.
102 // Load the l18n library.
103 require( ABSPATH . WPINC . '/l10n.php' );
105 // Run the installer if WordPress is not installed.
109 // Load most of WordPress.
110 require( ABSPATH . WPINC . '/class-wp-walker.php' );
111 require( ABSPATH . WPINC . '/class-wp-ajax-response.php' );
112 require( ABSPATH . WPINC . '/formatting.php' );
113 require( ABSPATH . WPINC . '/capabilities.php' );
114 require( ABSPATH . WPINC . '/query.php' );
115 require( ABSPATH . WPINC . '/theme.php' );
116 require( ABSPATH . WPINC . '/user.php' );
117 require( ABSPATH . WPINC . '/meta.php' );
118 require( ABSPATH . WPINC . '/general-template.php' );
119 require( ABSPATH . WPINC . '/link-template.php' );
120 require( ABSPATH . WPINC . '/author-template.php' );
121 require( ABSPATH . WPINC . '/post.php' );
122 require( ABSPATH . WPINC . '/post-template.php' );
123 require( ABSPATH . WPINC . '/category.php' );
124 require( ABSPATH . WPINC . '/category-template.php' );
125 require( ABSPATH . WPINC . '/comment.php' );
126 require( ABSPATH . WPINC . '/comment-template.php' );
127 require( ABSPATH . WPINC . '/rewrite.php' );
128 require( ABSPATH . WPINC . '/feed.php' );
129 require( ABSPATH . WPINC . '/bookmark.php' );
130 require( ABSPATH . WPINC . '/bookmark-template.php' );
131 require( ABSPATH . WPINC . '/kses.php' );
132 require( ABSPATH . WPINC . '/cron.php' );
133 require( ABSPATH . WPINC . '/deprecated.php' );
134 require( ABSPATH . WPINC . '/script-loader.php' );
135 require( ABSPATH . WPINC . '/taxonomy.php' );
136 require( ABSPATH . WPINC . '/update.php' );
137 require( ABSPATH . WPINC . '/canonical.php' );
138 require( ABSPATH . WPINC . '/shortcodes.php' );
139 require( ABSPATH . WPINC . '/media.php' );
140 require( ABSPATH . WPINC . '/http.php' );
141 require( ABSPATH . WPINC . '/class-http.php' );
142 require( ABSPATH . WPINC . '/widgets.php' );
143 require( ABSPATH . WPINC . '/nav-menu.php' );
144 require( ABSPATH . WPINC . '/nav-menu-template.php' );
145 require( ABSPATH . WPINC . '/admin-bar.php' );
147 // Load multisite-specific files.
148 if ( is_multisite() ) {
149 require( ABSPATH . WPINC . '/ms-functions.php' );
150 require( ABSPATH . WPINC . '/ms-default-filters.php' );
151 require( ABSPATH . WPINC . '/ms-deprecated.php' );
154 // Define constants that rely on the API to obtain the default value.
155 // Define must-use plugin directory constants, which may be overridden in the sunrise.php drop-in.
156 wp_plugin_directory_constants( );
158 // Load must-use plugins.
159 foreach ( wp_get_mu_plugins() as $mu_plugin ) {
160 include_once( $mu_plugin );
164 // Load network activated plugins.
165 if ( is_multisite() ) {
166 foreach( wp_get_active_network_plugins() as $network_plugin ) {
167 include_once( $network_plugin );
169 unset( $network_plugin );
172 do_action( 'muplugins_loaded' );
174 if ( is_multisite() )
175 ms_cookie_constants( );
177 // Define constants after multisite is loaded. Cookie-related constants may be overridden in ms_network_cookies().
178 wp_cookie_constants( );
180 // Define and enforce our SSL constants
183 // Create common globals.
184 require( ABSPATH . WPINC . '/vars.php' );
186 // Make taxonomies and posts available to plugins and themes.
187 // @plugin authors: warning: these get registered again on the init hook.
188 create_initial_taxonomies();
189 create_initial_post_types();
191 // Register the default theme directory root
192 register_theme_directory( get_theme_root() );
194 // Load active plugins.
195 foreach ( wp_get_active_and_valid_plugins() as $plugin )
196 include_once( $plugin );
199 // Load pluggable functions.
200 require( ABSPATH . WPINC . '/pluggable.php' );
201 require( ABSPATH . WPINC . '/pluggable-deprecated.php' );
203 // Set internal encoding.
204 wp_set_internal_encoding();
206 // Run wp_cache_postload() if object cache is enabled and the function exists.
207 if ( WP_CACHE && function_exists( 'wp_cache_postload' ) )
210 do_action( 'plugins_loaded' );
212 // Define constants which affect functionality if not already defined.
213 wp_functionality_constants( );
215 // Add magic quotes and set up $_REQUEST ( $_GET + $_POST )
218 do_action( 'sanitize_comment_cookies' );
221 * WordPress Query object
222 * @global object $wp_the_query
225 $wp_the_query = new WP_Query();
228 * Holds the reference to @see $wp_the_query
229 * Use this global for WordPress queries
230 * @global object $wp_query
233 $wp_query =& $wp_the_query;
236 * Holds the WordPress Rewrite object for creating pretty URLs
237 * @global object $wp_rewrite
240 $wp_rewrite = new WP_Rewrite();
250 * WordPress Widget Factory Object
251 * @global object $wp_widget_factory
254 $GLOBALS['wp_widget_factory'] = new WP_Widget_Factory();
256 do_action( 'setup_theme' );
258 // Define the template related constants.
259 wp_templating_constants( );
261 // Load the default text localization domain.
262 load_default_textdomain();
264 // Find the blog locale.
265 $locale = get_locale();
266 $locale_file = WP_LANG_DIR . "/$locale.php";
267 if ( ( 0 === validate_file( $locale ) ) && is_readable( $locale_file ) )
268 require( $locale_file );
271 // Pull in locale data after loading text domain.
272 require( ABSPATH . WPINC . '/locale.php' );
275 * WordPress Locale object for loading locale domain date and various strings.
276 * @global object $wp_locale
279 $GLOBALS['wp_locale'] = new WP_Locale();
281 // Load the functions for the active theme, for both parent and child theme if applicable.
282 if ( ! defined( 'WP_INSTALLING' ) || 'wp-activate.php' === $pagenow ) {
283 if ( TEMPLATEPATH !== STYLESHEETPATH && file_exists( STYLESHEETPATH . '/functions.php' ) )
284 include( STYLESHEETPATH . '/functions.php' );
285 if ( file_exists( TEMPLATEPATH . '/functions.php' ) )
286 include( TEMPLATEPATH . '/functions.php' );
289 do_action( 'after_setup_theme' );
291 // Load any template functions the theme supports.
292 require_if_theme_supports( 'post-thumbnails', ABSPATH . WPINC . '/post-thumbnail-template.php' );
294 // Set up current user.
298 * Most of WP is loaded at this stage, and the user is authenticated. WP continues
299 * to load on the init hook that follows (e.g. widgets), and many plugins instantiate
300 * themselves on it for all sorts of reasons (e.g. they need a user, a taxonomy, etc.).
302 * If you wish to plug an action once WP is loaded, use the wp_loaded hook below.
307 if ( is_multisite() ) {
308 if ( true !== ( $file = ms_site_check() ) ) {
316 * This hook is fired once WP, all plugins, and the theme are fully loaded and instantiated.
318 * AJAX requests should use wp-admin/admin-ajax.php. admin-ajax.php can handle requests for
319 * users not logged in.
321 * @link http://codex.wordpress.org/AJAX_in_Plugins
325 do_action('wp_loaded');