[Summary view] [Print] [Text view]

   1  <?php
   2  /**
   3   * Used to set up and fix common variables and include
   4   * the WordPress procedural and class library.
   5   *
   6   * Allows for some configuration in wp-config.php (see default-constants.php)
   7   *
   8   * @internal This file must be parsable by PHP4.
   9   *
  10   * @package WordPress
  11   */
  12  
  13  /**
  14   * Stores the location of the WordPress directory of functions, classes, and core content.
  15   *
  16   * @since 1.0.0
  17   */
  18  define( 'WPINC', 'wp-includes' );
  19  
  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' );
  24  
  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( );
  27  
  28  // Check for the required PHP version and for the MySQL extension or a database drop-in.
  29  wp_check_php_mysql_versions();
  30  
  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 );
  34  
  35  // Set default timezone in PHP 5.
  36  if ( function_exists( 'date_default_timezone_set' ) )
  37      date_default_timezone_set( 'UTC' );
  38  
  39  // Turn register_globals off.
  40  wp_unregister_GLOBALS();
  41  
  42  // Ensure these global variables do not exist so they do not interfere with WordPress.
  43  unset( $wp_filter, $cache_lastcommentmodified );
  44  
  45  // Standardize $_SERVER variables across setups.
  46  wp_fix_server_vars();
  47  
  48  // Check if we have received a request due to missing favicon.ico
  49  wp_favicon_request();
  50  
  51  // Check if we're in maintenance mode.
  52  wp_maintenance();
  53  
  54  // Start loading timer.
  55  timer_start();
  56  
  57  // Check if we're in WP_DEBUG mode.
  58  wp_debug_mode();
  59  
  60  // For an advanced caching plugin to use. Uses a static drop-in because you would only want one.
  61  if ( WP_CACHE )
  62      WP_DEBUG ? include( WP_CONTENT_DIR . '/advanced-cache.php' ) : @include( WP_CONTENT_DIR . '/advanced-cache.php' );
  63  
  64  // Define WP_LANG_DIR if not set.
  65  wp_set_lang_dir();
  66  
  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' );
  73  require( ABSPATH . WPINC . '/pomo/mo.php' );
  74  
  75  // Include the wpdb class and, if present, a db.php database drop-in.
  76  require_wp_db();
  77  
  78  // Set the database table prefix and the format specifiers for database table columns.
  79  $GLOBALS['table_prefix'] = $table_prefix;
  80  wp_set_wpdb_vars();
  81  
  82  // Start the WordPress object cache, or an external object cache if the drop-in is present.
  83  wp_start_object_cache();
  84  
  85  // Attach the default filters.
  86  require( ABSPATH . WPINC . '/default-filters.php' );
  87  
  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 );
  94  }
  95  
  96  register_shutdown_function( 'shutdown_action_hook' );
  97  
  98  // Stop most of WordPress from being loaded if we just want the basics.
  99  if ( SHORTINIT )
 100      return false;
 101  
 102  // Load the L10n library.
 103  require_once( ABSPATH . WPINC . '/l10n.php' );
 104  
 105  // Run the installer if WordPress is not installed.
 106  wp_not_installed();
 107  
 108  // Load most of WordPress.
 109  require( ABSPATH . WPINC . '/class-wp-walker.php' );
 110  require( ABSPATH . WPINC . '/class-wp-ajax-response.php' );
 111  require ( ABSPATH . WPINC . '/formatting.php' );
 112  require( ABSPATH . WPINC . '/capabilities.php' );
 113  require( ABSPATH . WPINC . '/query.php' );
 114  require( ABSPATH . WPINC . '/theme.php' );
 115  require( ABSPATH . WPINC . '/user.php' );
 116  require( ABSPATH . WPINC . '/meta.php' );
 117  require( ABSPATH . WPINC . '/general-template.php' );
 118  require( ABSPATH . WPINC . '/link-template.php' );
 119  require( ABSPATH . WPINC . '/author-template.php' );
 120  require( ABSPATH . WPINC . '/post.php' );
 121  require( ABSPATH . WPINC . '/post-template.php' );
 122  require( ABSPATH . WPINC . '/category.php' );
 123  require( ABSPATH . WPINC . '/category-template.php' );
 124  require( ABSPATH . WPINC . '/comment.php' );
 125  require( ABSPATH . WPINC . '/comment-template.php' );
 126  require( ABSPATH . WPINC . '/rewrite.php' );
 127  require( ABSPATH . WPINC . '/feed.php' );
 128  require( ABSPATH . WPINC . '/bookmark.php' );
 129  require( ABSPATH . WPINC . '/bookmark-template.php' );
 130  require ( ABSPATH . WPINC . '/kses.php' );
 131  require( ABSPATH . WPINC . '/cron.php' );
 132  require( ABSPATH . WPINC . '/deprecated.php' );
 133  require( ABSPATH . WPINC . '/script-loader.php' );
 134  require( ABSPATH . WPINC . '/taxonomy.php' );
 135  require( ABSPATH . WPINC . '/update.php' );
 136  require( ABSPATH . WPINC . '/canonical.php' );
 137  require( ABSPATH . WPINC . '/shortcodes.php' );
 138  require( ABSPATH . WPINC . '/media.php' );
 139  require( ABSPATH . WPINC . '/http.php' );
 140  require( ABSPATH . WPINC . '/class-http.php' );
 141  require( ABSPATH . WPINC . '/widgets.php' );
 142  require( ABSPATH . WPINC . '/nav-menu.php' );
 143  require( ABSPATH . WPINC . '/nav-menu-template.php' );
 144  require( ABSPATH . WPINC . '/admin-bar.php' );
 145  
 146  // Load multisite-specific files.
 147  if ( is_multisite() ) {
 148      require( ABSPATH . WPINC . '/ms-functions.php' );
 149      require( ABSPATH . WPINC . '/ms-default-filters.php' );
 150      require( ABSPATH . WPINC . '/ms-deprecated.php' );
 151  }
 152  
 153  // Define constants that rely on the API to obtain the default value.
 154  // Define must-use plugin directory constants, which may be overridden in the sunrise.php drop-in.
 155  wp_plugin_directory_constants( );
 156  
 157  // Load must-use plugins.
 158  foreach ( wp_get_mu_plugins() as $mu_plugin ) {
 159      include_once( $mu_plugin );
 160  }
 161  unset( $mu_plugin );
 162  
 163  // Load network activated plugins.
 164  if ( is_multisite() ) {
 165      foreach( wp_get_active_network_plugins() as $network_plugin ) {
 166          include_once( $network_plugin );
 167      }
 168      unset( $network_plugin );
 169  }
 170  
 171  do_action( 'muplugins_loaded' );
 172  
 173  if ( is_multisite() )
 174      ms_cookie_constants(  );
 175  
 176  // Define constants after multisite is loaded. Cookie-related constants may be overridden in ms_network_cookies().
 177  wp_cookie_constants( );
 178  
 179  // Define and enforce our SSL constants
 180  wp_ssl_constants( );
 181  
 182  // Create common globals.
 183  require( ABSPATH . WPINC . '/vars.php' );
 184  
 185  // Make taxonomies and posts available to plugins and themes.
 186  // @plugin authors: warning: these get registered again on the init hook.
 187  create_initial_taxonomies();
 188  create_initial_post_types();
 189  
 190  // Register the default theme directory root
 191  register_theme_directory( get_theme_root() );
 192  
 193  // Load active plugins.
 194  foreach ( wp_get_active_and_valid_plugins() as $plugin )
 195      include_once( $plugin );
 196  unset( $plugin );
 197  
 198  // Load pluggable functions.
 199  require ( ABSPATH . WPINC . '/pluggable.php' );
 200  require( ABSPATH . WPINC . '/pluggable-deprecated.php' );
 201  
 202  // Set internal encoding.
 203  wp_set_internal_encoding();
 204  
 205  // Run wp_cache_postload() if object cache is enabled and the function exists.
 206  if ( WP_CACHE && function_exists( 'wp_cache_postload' ) )
 207      wp_cache_postload();
 208  
 209  do_action( 'plugins_loaded' );
 210  
 211  // Define constants which affect functionality if not already defined.
 212  wp_functionality_constants( );
 213  
 214  // Add magic quotes and set up $_REQUEST ( $_GET + $_POST )
 215  wp_magic_quotes();
 216  
 217  do_action( 'sanitize_comment_cookies' );
 218  
 219  /**
 220   * WordPress Query object
 221   * @global object $wp_the_query
 222   * @since 2.0.0
 223   */
 224  $wp_the_query = new WP_Query();
 225  
 226  /**
 227   * Holds the reference to @see $wp_the_query
 228   * Use this global for WordPress queries
 229   * @global object $wp_query
 230   * @since 1.5.0
 231   */
 232  $wp_query =& $wp_the_query;
 233  
 234  /**
 235   * Holds the WordPress Rewrite object for creating pretty URLs
 236   * @global object $wp_rewrite
 237   * @since 1.5.0
 238   */
 239  $GLOBALS['wp_rewrite'] = new WP_Rewrite();
 240  
 241  /**
 242   * WordPress Object
 243   * @global object $wp
 244   * @since 2.0.0
 245   */
 246  $wp = new WP();
 247  
 248  /**
 249   * WordPress Widget Factory Object
 250   * @global object $wp_widget_factory
 251   * @since 2.8.0
 252   */
 253  $GLOBALS['wp_widget_factory'] = new WP_Widget_Factory();
 254  
 255  do_action( 'setup_theme' );
 256  
 257  // Define the template related constants.
 258  wp_templating_constants(  );
 259  
 260  // Load the default text localization domain.
 261  load_default_textdomain();
 262  
 263  $locale = get_locale();
 264  $locale_file = WP_LANG_DIR . "/$locale.php";
 265  if ( ( 0 === validate_file( $locale ) ) && is_readable( $locale_file ) )
 266      require( $locale_file );
 267  unset( $locale_file );
 268  
 269  // Pull in locale data after loading text domain.
 270  require_once( ABSPATH . WPINC . '/locale.php' );
 271  
 272  /**
 273   * WordPress Locale object for loading locale domain date and various strings.
 274   * @global object $wp_locale
 275   * @since 2.1.0
 276   */
 277  $GLOBALS['wp_locale'] = new WP_Locale();
 278  
 279  // Load the functions for the active theme, for both parent and child theme if applicable.
 280  if ( ! defined( 'WP_INSTALLING' ) || 'wp-activate.php' === $pagenow ) {
 281      if ( TEMPLATEPATH !== STYLESHEETPATH && file_exists( STYLESHEETPATH . '/functions.php' ) )
 282          include( STYLESHEETPATH . '/functions.php' );
 283      if ( file_exists( TEMPLATEPATH . '/functions.php' ) )
 284          include( TEMPLATEPATH . '/functions.php' );
 285  }
 286  
 287  do_action( 'after_setup_theme' );
 288  
 289  // Load any template functions the theme supports.
 290  require_if_theme_supports( 'post-thumbnails', ABSPATH . WPINC . '/post-thumbnail-template.php' );
 291  
 292  // Set up current user.
 293  $wp->init();
 294  
 295  /**
 296   * Most of WP is loaded at this stage, and the user is authenticated. WP continues
 297   * to load on the init hook that follows (e.g. widgets), and many plugins instantiate
 298   * themselves on it for all sorts of reasons (e.g. they need a user, a taxonomy, etc.).
 299   *
 300   * If you wish to plug an action once WP is loaded, use the wp_loaded hook below.
 301   */
 302  do_action( 'init' );
 303  
 304  // Check site status
 305  if ( is_multisite() ) {
 306      if ( true !== ( $file = ms_site_check() ) ) {
 307          require( $file );
 308          die();
 309      }
 310      unset($file);
 311  }
 312  
 313  /**
 314   * This hook is fired once WP, all plugins, and the theme are fully loaded and instantiated.
 315   *
 316   * AJAX requests should use wp-admin/admin-ajax.php. admin-ajax.php can handle requests for
 317   * users not logged in.
 318   *
 319   * @link http://codex.wordpress.org/AJAX_in_Plugins
 320   *
 321   * @since 3.0.0
 322   */
 323  do_action('wp_loaded');