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   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  
  24  /*
  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.
  28   */
  29  global $wp_version, $wp_db_version, $tinymce_version, $required_php_version, $required_mysql_version;
  30  require( ABSPATH . WPINC . '/version.php' );
  31  
  32  // Set initial default constants including WP_MEMORY_LIMIT, WP_MAX_MEMORY_LIMIT, WP_DEBUG, WP_CONTENT_DIR and WP_CACHE.
  33  wp_initial_constants();
  34  
  35  // Check for the required PHP version and for the MySQL extension or a database drop-in.
  36  wp_check_php_mysql_versions();
  37  
  38  // Disable magic quotes at runtime. Magic quotes are added using wpdb later in wp-settings.php.
  39  @ini_set( 'magic_quotes_runtime', 0 );
  40  @ini_set( 'magic_quotes_sybase',  0 );
  41  
  42  // WordPress calculates offsets from UTC.
  43  date_default_timezone_set( 'UTC' );
  44  
  45  // Turn register_globals off.
  46  wp_unregister_GLOBALS();
  47  
  48  // Standardize $_SERVER variables across setups.
  49  wp_fix_server_vars();
  50  
  51  // Check if we have received a request due to missing favicon.ico
  52  wp_favicon_request();
  53  
  54  // Check if we're in maintenance mode.
  55  wp_maintenance();
  56  
  57  // Start loading timer.
  58  timer_start();
  59  
  60  // Check if we're in WP_DEBUG mode.
  61  wp_debug_mode();
  62  
  63  // For an advanced caching plugin to use. Uses a static drop-in because you would only want one.
  64  if ( WP_CACHE )
  65      WP_DEBUG ? include( WP_CONTENT_DIR . '/advanced-cache.php' ) : @include( WP_CONTENT_DIR . '/advanced-cache.php' );
  66  
  67  // Define WP_LANG_DIR if not set.
  68  wp_set_lang_dir();
  69  
  70  // Load early WordPress files.
  71  require( ABSPATH . WPINC . '/compat.php' );
  72  require( ABSPATH . WPINC . '/functions.php' );
  73  require( ABSPATH . WPINC . '/class-wp.php' );
  74  require( ABSPATH . WPINC . '/class-wp-error.php' );
  75  require( ABSPATH . WPINC . '/plugin.php' );
  76  require( ABSPATH . WPINC . '/pomo/mo.php' );
  77  
  78  // Include the wpdb class and, if present, a db.php database drop-in.
  79  require_wp_db();
  80  
  81  // Set the database table prefix and the format specifiers for database table columns.
  82  $GLOBALS['table_prefix'] = $table_prefix;
  83  wp_set_wpdb_vars();
  84  
  85  // Start the WordPress object cache, or an external object cache if the drop-in is present.
  86  wp_start_object_cache();
  87  
  88  // Attach the default filters.
  89  require( ABSPATH . WPINC . '/default-filters.php' );
  90  
  91  // Initialize multisite if enabled.
  92  if ( is_multisite() ) {
  93      require( ABSPATH . WPINC . '/ms-blogs.php' );
  94      require( ABSPATH . WPINC . '/ms-settings.php' );
  95  } elseif ( ! defined( 'MULTISITE' ) ) {
  96      define( 'MULTISITE', false );
  97  }
  98  
  99  register_shutdown_function( 'shutdown_action_hook' );
 100  
 101  // Stop most of WordPress from being loaded if we just want the basics.
 102  if ( SHORTINIT )
 103      return false;
 104  
 105  // Load the L10n library.
 106  require_once( ABSPATH . WPINC . '/l10n.php' );
 107  
 108  // Run the installer if WordPress is not installed.
 109  wp_not_installed();
 110  
 111  // Load most of WordPress.
 112  require( ABSPATH . WPINC . '/class-wp-walker.php' );
 113  require( ABSPATH . WPINC . '/class-wp-ajax-response.php' );
 114  require ( ABSPATH . WPINC . '/formatting.php' );
 115  require( ABSPATH . WPINC . '/capabilities.php' );
 116  require( ABSPATH . WPINC . '/query.php' );
 117  require( ABSPATH . WPINC . '/date.php' );
 118  require( ABSPATH . WPINC . '/theme.php' );
 119  require( ABSPATH . WPINC . '/class-wp-theme.php' );
 120  require( ABSPATH . WPINC . '/template.php' );
 121  require( ABSPATH . WPINC . '/user.php' );
 122  require( ABSPATH . WPINC . '/meta.php' );
 123  require( ABSPATH . WPINC . '/general-template.php' );
 124  require( ABSPATH . WPINC . '/link-template.php' );
 125  require( ABSPATH . WPINC . '/author-template.php' );
 126  require( ABSPATH . WPINC . '/post.php' );
 127  require( ABSPATH . WPINC . '/post-template.php' );
 128  require( ABSPATH . WPINC . '/revision.php' );
 129  require( ABSPATH . WPINC . '/post-formats.php' );
 130  require( ABSPATH . WPINC . '/post-thumbnail-template.php' );
 131  require( ABSPATH . WPINC . '/category.php' );
 132  require( ABSPATH . WPINC . '/category-template.php' );
 133  require( ABSPATH . WPINC . '/comment.php' );
 134  require( ABSPATH . WPINC . '/comment-template.php' );
 135  require( ABSPATH . WPINC . '/rewrite.php' );
 136  require( ABSPATH . WPINC . '/feed.php' );
 137  require( ABSPATH . WPINC . '/bookmark.php' );
 138  require( ABSPATH . WPINC . '/bookmark-template.php' );
 139  require ( ABSPATH . WPINC . '/kses.php' );
 140  require( ABSPATH . WPINC . '/cron.php' );
 141  require( ABSPATH . WPINC . '/deprecated.php' );
 142  require( ABSPATH . WPINC . '/script-loader.php' );
 143  require( ABSPATH . WPINC . '/taxonomy.php' );
 144  require( ABSPATH . WPINC . '/update.php' );
 145  require( ABSPATH . WPINC . '/canonical.php' );
 146  require( ABSPATH . WPINC . '/shortcodes.php' );
 147  require( ABSPATH . WPINC . '/class-wp-embed.php' );
 148  require( ABSPATH . WPINC . '/media.php' );
 149  require( ABSPATH . WPINC . '/http.php' );
 150  require( ABSPATH . WPINC . '/class-http.php' );
 151  require( ABSPATH . WPINC . '/widgets.php' );
 152  require( ABSPATH . WPINC . '/nav-menu.php' );
 153  require( ABSPATH . WPINC . '/nav-menu-template.php' );
 154  require( ABSPATH . WPINC . '/admin-bar.php' );
 155  
 156  // Load multisite-specific files.
 157  if ( is_multisite() ) {
 158      require( ABSPATH . WPINC . '/ms-functions.php' );
 159      require( ABSPATH . WPINC . '/ms-default-filters.php' );
 160      require( ABSPATH . WPINC . '/ms-deprecated.php' );
 161  }
 162  
 163  // Define constants that rely on the API to obtain the default value.
 164  // Define must-use plugin directory constants, which may be overridden in the sunrise.php drop-in.
 165  wp_plugin_directory_constants();
 166  
 167  // Load must-use plugins.
 168  foreach ( wp_get_mu_plugins() as $mu_plugin ) {
 169      include_once( $mu_plugin );
 170  }
 171  unset( $mu_plugin );
 172  
 173  // Load network activated plugins.
 174  if ( is_multisite() ) {
 175      foreach( wp_get_active_network_plugins() as $network_plugin ) {
 176          include_once( $network_plugin );
 177      }
 178      unset( $network_plugin );
 179  }
 180  
 181  /**
 182   * Fires once all must-use and network-activated plugins have loaded.
 183   *
 184   * @since 2.8.0
 185   */
 186  do_action( 'muplugins_loaded' );
 187  
 188  if ( is_multisite() )
 189      ms_cookie_constants(  );
 190  
 191  // Define constants after multisite is loaded. Cookie-related constants may be overridden in ms_network_cookies().
 192  wp_cookie_constants();
 193  
 194  // Define and enforce our SSL constants
 195  wp_ssl_constants();
 196  
 197  // Create common globals.
 198  require( ABSPATH . WPINC . '/vars.php' );
 199  
 200  // Make taxonomies and posts available to plugins and themes.
 201  // @plugin authors: warning: these get registered again on the init hook.
 202  create_initial_taxonomies();
 203  create_initial_post_types();
 204  
 205  // Register the default theme directory root
 206  register_theme_directory( get_theme_root() );
 207  
 208  // Load active plugins.
 209  foreach ( wp_get_active_and_valid_plugins() as $plugin )
 210      include_once( $plugin );
 211  unset( $plugin );
 212  
 213  // Load pluggable functions.
 214  require ( ABSPATH . WPINC . '/pluggable.php' );
 215  require( ABSPATH . WPINC . '/pluggable-deprecated.php' );
 216  
 217  // Set internal encoding.
 218  wp_set_internal_encoding();
 219  
 220  // Run wp_cache_postload() if object cache is enabled and the function exists.
 221  if ( WP_CACHE && function_exists( 'wp_cache_postload' ) )
 222      wp_cache_postload();
 223  
 224  /**
 225   * Fires once activated plugins have loaded.
 226   *
 227   * Pluggable functions are also available at this point in the loading order.
 228   *
 229   * @since 1.5.0
 230   */
 231  do_action( 'plugins_loaded' );
 232  
 233  // Define constants which affect functionality if not already defined.
 234  wp_functionality_constants();
 235  
 236  // Add magic quotes and set up $_REQUEST ( $_GET + $_POST )
 237  wp_magic_quotes();
 238  
 239  /**
 240   * Fires when comment cookies are sanitized.
 241   *
 242   * @since 2.0.11
 243   */
 244  do_action( 'sanitize_comment_cookies' );
 245  
 246  /**
 247   * WordPress Query object
 248   * @global object $wp_the_query
 249   * @since 2.0.0
 250   */
 251  $wp_the_query = new WP_Query();
 252  
 253  /**
 254   * Holds the reference to @see $wp_the_query
 255   * Use this global for WordPress queries
 256   * @global object $wp_query
 257   * @since 1.5.0
 258   */
 259  $wp_query = $wp_the_query;
 260  
 261  /**
 262   * Holds the WordPress Rewrite object for creating pretty URLs
 263   * @global object $wp_rewrite
 264   * @since 1.5.0
 265   */
 266  $GLOBALS['wp_rewrite'] = new WP_Rewrite();
 267  
 268  /**
 269   * WordPress Object
 270   * @global object $wp
 271   * @since 2.0.0
 272   */
 273  $wp = new WP();
 274  
 275  /**
 276   * WordPress Widget Factory Object
 277   * @global object $wp_widget_factory
 278   * @since 2.8.0
 279   */
 280  $GLOBALS['wp_widget_factory'] = new WP_Widget_Factory();
 281  
 282  /**
 283   * WordPress User Roles
 284   * @global object $wp_roles
 285   * @since 2.0.0
 286   */
 287  $GLOBALS['wp_roles'] = new WP_Roles();
 288  
 289  /**
 290   * Fires before the theme is loaded.
 291   *
 292   * @since 2.6.0
 293   */
 294  do_action( 'setup_theme' );
 295  
 296  // Define the template related constants.
 297  wp_templating_constants(  );
 298  
 299  // Load the default text localization domain.
 300  load_default_textdomain();
 301  
 302  $locale = get_locale();
 303  $locale_file = WP_LANG_DIR . "/$locale.php";
 304  if ( ( 0 === validate_file( $locale ) ) && is_readable( $locale_file ) )
 305      require( $locale_file );
 306  unset( $locale_file );
 307  
 308  // Pull in locale data after loading text domain.
 309  require_once( ABSPATH . WPINC . '/locale.php' );
 310  
 311  /**
 312   * WordPress Locale object for loading locale domain date and various strings.
 313   * @global object $wp_locale
 314   * @since 2.1.0
 315   */
 316  $GLOBALS['wp_locale'] = new WP_Locale();
 317  
 318  // Load the functions for the active theme, for both parent and child theme if applicable.
 319  if ( ! defined( 'WP_INSTALLING' ) || 'wp-activate.php' === $pagenow ) {
 320      if ( TEMPLATEPATH !== STYLESHEETPATH && file_exists( STYLESHEETPATH . '/functions.php' ) )
 321          include( STYLESHEETPATH . '/functions.php' );
 322      if ( file_exists( TEMPLATEPATH . '/functions.php' ) )
 323          include( TEMPLATEPATH . '/functions.php' );
 324  }
 325  
 326  /**
 327   * Fires after the theme is loaded.
 328   *
 329   * @since 3.0.0
 330   */
 331  do_action( 'after_setup_theme' );
 332  
 333  // Set up current user.
 334  $wp->init();
 335  
 336  /**
 337   * Fires after WordPress has finished loading but before any headers are sent.
 338   *
 339   * Most of WP is loaded at this stage, and the user is authenticated. WP continues
 340   * to load on the init hook that follows (e.g. widgets), and many plugins instantiate
 341   * themselves on it for all sorts of reasons (e.g. they need a user, a taxonomy, etc.).
 342   *
 343   * If you wish to plug an action once WP is loaded, use the wp_loaded hook below.
 344   *
 345   * @since 1.5.0
 346   */
 347  do_action( 'init' );
 348  
 349  // Check site status
 350  if ( is_multisite() ) {
 351      if ( true !== ( $file = ms_site_check() ) ) {
 352          require( $file );
 353          die();
 354      }
 355      unset($file);
 356  }
 357  
 358  /**
 359   * This hook is fired once WP, all plugins, and the theme are fully loaded and instantiated.
 360   *
 361   * AJAX requests should use wp-admin/admin-ajax.php. admin-ajax.php can handle requests for
 362   * users not logged in.
 363   *
 364   * @link http://codex.wordpress.org/AJAX_in_Plugins
 365   *
 366   * @since 3.0.0
 367   */
 368  do_action( 'wp_loaded' );