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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   * @package WordPress
   9   */
  10  
  11  /**
  12   * Stores the location of the WordPress directory of functions, classes, and core content.
  13   *
  14   * @since 1.0.0
  15   */
  16  define( 'WPINC', 'wp-includes' );
  17  
  18  // Include files required for initialization.
  19  require ( ABSPATH . WPINC . '/load.php' );
  20  require ( ABSPATH . WPINC . '/default-constants.php' );
  21  require ( ABSPATH . WPINC . '/version.php' );
  22  
  23  // Set initial default constants including WP_MEMORY_LIMIT, WP_DEBUG, WP_CONTENT_DIR and WP_CACHE.
  24  wp_initial_constants( );
  25  
  26  // Disable magic quotes at runtime. Magic quotes are added using wpdb later in wp-settings.php.
  27  set_magic_quotes_runtime( 0 );
  28  @ini_set( 'magic_quotes_sybase', 0 );
  29  
  30  // Set default timezone in PHP 5.
  31  if ( function_exists( 'date_default_timezone_set' ) )
  32      date_default_timezone_set( 'UTC' );
  33  
  34  // Turn register_globals off.
  35  wp_unregister_GLOBALS();
  36  
  37  // Ensure these global variables do not exist so they do not interfere with WordPress.
  38  unset( $wp_filter, $cache_lastcommentmodified, $cache_lastpostdate );
  39  
  40  // Standardize $_SERVER variables across setups.
  41  wp_fix_server_vars();
  42  
  43  // Check for the required PHP version and for the MySQL extension or a database drop-in.
  44  wp_check_php_mysql_versions();
  45  
  46  // Check if we have recieved a request due to missing favicon.ico
  47  wp_favicon_request();
  48  
  49  // Check if we're in maintenance mode.
  50  wp_maintenance();
  51  
  52  // Start loading timer.
  53  timer_start();
  54  
  55  // Check if we're in WP_DEBUG mode.
  56  wp_debug_mode();
  57  
  58  // For an advanced caching plugin to use. Uses a static drop-in because you would only want one.
  59  if ( WP_CACHE )
  60      WP_DEBUG ? include( WP_CONTENT_DIR . '/advanced-cache.php' ) : @include( WP_CONTENT_DIR . '/advanced-cache.php' );
  61  
  62  // Define WP_LANG_DIR if not set.
  63  wp_set_lang_dir();
  64  
  65  // Load early WordPress files.
  66  require ( ABSPATH . WPINC . '/compat.php' );
  67  require ( ABSPATH . WPINC . '/functions.php' );
  68  require ( ABSPATH . WPINC . '/classes.php' );
  69  
  70  // Include the wpdb class, or a db.php database drop-in if present.
  71  require_wp_db();
  72  
  73  // Set the database table prefix and the format specifiers for database table columns.
  74  wp_set_wpdb_vars();
  75  
  76  // Start the WordPress object cache, or an external object cache if the drop-in is present.
  77  wp_start_object_cache();
  78  
  79  // Load early WordPress files.
  80  require ( ABSPATH . WPINC . '/plugin.php' );
  81  require ( ABSPATH . WPINC . '/default-filters.php' );
  82  require ( ABSPATH . WPINC . '/pomo/mo.php' );
  83  
  84  // Initialize multisite if enabled.
  85  if ( is_multisite() ) {
  86      require ( ABSPATH . WPINC . '/ms-blogs.php' );
  87      require ( ABSPATH . WPINC . '/ms-settings.php' );
  88  } elseif ( ! defined( 'MULTISITE' ) ) {
  89      define( 'MULTISITE', false );
  90  }
  91  
  92  // Stop most of WordPress from being loaded if we just want the basics.
  93  if ( SHORTINIT )
  94      return false;
  95  
  96  // Load the l18n library.
  97  require ( ABSPATH . WPINC . '/l10n.php' );
  98  
  99  // Run the installer if WordPress is not installed.
 100  wp_not_installed();
 101  
 102  // Load most of WordPress.
 103  require ( ABSPATH . WPINC . '/formatting.php' );
 104  require ( ABSPATH . WPINC . '/capabilities.php' );
 105  require ( ABSPATH . WPINC . '/query.php' );
 106  require ( ABSPATH . WPINC . '/theme.php' );
 107  require ( ABSPATH . WPINC . '/user.php' );
 108  require ( ABSPATH . WPINC . '/meta.php' );
 109  require ( ABSPATH . WPINC . '/general-template.php' );
 110  require ( ABSPATH . WPINC . '/link-template.php' );
 111  require ( ABSPATH . WPINC . '/author-template.php' );
 112  require ( ABSPATH . WPINC . '/post.php' );
 113  require ( ABSPATH . WPINC . '/post-template.php' );
 114  require ( ABSPATH . WPINC . '/category.php' );
 115  require ( ABSPATH . WPINC . '/category-template.php' );
 116  require ( ABSPATH . WPINC . '/comment.php' );
 117  require ( ABSPATH . WPINC . '/comment-template.php' );
 118  require ( ABSPATH . WPINC . '/rewrite.php' );
 119  require ( ABSPATH . WPINC . '/feed.php' );
 120  require ( ABSPATH . WPINC . '/bookmark.php' );
 121  require ( ABSPATH . WPINC . '/bookmark-template.php' );
 122  require ( ABSPATH . WPINC . '/kses.php' );
 123  require ( ABSPATH . WPINC . '/cron.php' );
 124  require ( ABSPATH . WPINC . '/deprecated.php' );
 125  require ( ABSPATH . WPINC . '/script-loader.php' );
 126  require ( ABSPATH . WPINC . '/taxonomy.php' );
 127  require ( ABSPATH . WPINC . '/update.php' );
 128  require ( ABSPATH . WPINC . '/canonical.php' );
 129  require ( ABSPATH . WPINC . '/shortcodes.php' );
 130  require ( ABSPATH . WPINC . '/media.php' );
 131  require ( ABSPATH . WPINC . '/http.php' );
 132  require ( ABSPATH . WPINC . '/class-http.php' );
 133  require ( ABSPATH . WPINC . '/widgets.php' );
 134  require ( ABSPATH . WPINC . '/nav-menu.php' );
 135  require ( ABSPATH . WPINC . '/nav-menu-template.php' );
 136  
 137  // Load multisite-specific files.
 138  if ( is_multisite() ) {
 139      require ( ABSPATH . WPINC . '/ms-functions.php' );
 140      require ( ABSPATH . WPINC . '/ms-default-filters.php' );
 141      require ( ABSPATH . WPINC . '/ms-deprecated.php' );
 142  }
 143  
 144  // Define constants that rely on the API to obtain the default value.
 145  // Define must-use plugin directory constants, which may be overridden in the sunrise.php drop-in.
 146  wp_plugin_directory_constants( );
 147  
 148  // Load must-use plugins.
 149  foreach ( wp_get_mu_plugins() as $mu_plugin ) {
 150      include_once( $mu_plugin );
 151  }
 152  unset( $mu_plugin );
 153  
 154  do_action( 'muplugins_loaded' );
 155  
 156  if ( is_multisite() )
 157      ms_cookie_constants(  );
 158  
 159  // Define constants after multisite is loaded. Cookie-related constants may be overridden in ms_network_cookies().
 160  wp_cookie_constants( );
 161  
 162  // Define and enforce our SSL constants
 163  wp_ssl_constants( );
 164  
 165  // Create common globals.
 166  require ( ABSPATH . WPINC . '/vars.php' );
 167  
 168  // Make taxonomies and posts available to plugins and themes.
 169  // @plugin authors: warning: these get registered again on the init hook.
 170  create_initial_taxonomies();
 171  create_initial_post_types();
 172  
 173  // Load active plugins.
 174  foreach ( wp_get_active_and_valid_plugins() as $plugin )
 175      include_once( $plugin );
 176  unset( $plugin );
 177  
 178  // Load pluggable functions.
 179  require ( ABSPATH . WPINC . '/pluggable.php' );
 180  require ( ABSPATH . WPINC . '/pluggable-deprecated.php' );
 181  
 182  // Set internal encoding.
 183  wp_set_internal_encoding();
 184  
 185  // Run wp_cache_postload() if object cache is enabled and the function exists.
 186  if ( WP_CACHE && function_exists( 'wp_cache_postload' ) )
 187      wp_cache_postload();
 188  
 189  do_action( 'plugins_loaded' );
 190  
 191  // Define constants which affect functionality if not already defined.
 192  wp_functionality_constants( );
 193  
 194  // Add magic quotes and set up $_REQUEST ( $_GET + $_POST )
 195  wp_magic_quotes();
 196  
 197  do_action( 'sanitize_comment_cookies' );
 198  
 199  /**
 200   * WordPress Query object
 201   * @global object $wp_the_query
 202   * @since 2.0.0
 203   */
 204  $wp_the_query =& new WP_Query();
 205  
 206  /**
 207   * Holds the reference to @see $wp_the_query
 208   * Use this global for WordPress queries
 209   * @global object $wp_query
 210   * @since 1.5.0
 211   */
 212  $wp_query =& $wp_the_query;
 213  
 214  /**
 215   * Holds the WordPress Rewrite object for creating pretty URLs
 216   * @global object $wp_rewrite
 217   * @since 1.5.0
 218   */
 219  $wp_rewrite =& new WP_Rewrite();
 220  
 221  /**
 222   * WordPress Object
 223   * @global object $wp
 224   * @since 2.0.0
 225   */
 226  $wp =& new WP();
 227  
 228  /**
 229   * WordPress Widget Factory Object
 230   * @global object $wp_widget_factory
 231   * @since 2.8.0
 232   */
 233  $wp_widget_factory =& new WP_Widget_Factory();
 234  
 235  do_action( 'setup_theme' );
 236  
 237  // Define the template related constants.
 238  wp_templating_constants(  );
 239  
 240  // Load the default text localization domain.
 241  load_default_textdomain();
 242  
 243  // Find the blog locale.
 244  $locale = get_locale();
 245  $locale_file = WP_LANG_DIR . "/$locale.php";
 246  if ( is_readable( $locale_file ) )
 247      require( $locale_file );
 248  unset($locale_file);
 249  
 250  // Pull in locale data after loading text domain.
 251  require ( ABSPATH . WPINC . '/locale.php' );
 252  
 253  /**
 254   * WordPress Locale object for loading locale domain date and various strings.
 255   * @global object $wp_locale
 256   * @since 2.1.0
 257   */
 258  $wp_locale =& new WP_Locale();
 259  
 260  // Load the functions for the active theme, for both parent and child theme if applicable.
 261  if ( TEMPLATEPATH !== STYLESHEETPATH && file_exists( STYLESHEETPATH . '/functions.php' ) )
 262      include ( STYLESHEETPATH . '/functions.php' );
 263  if ( file_exists( TEMPLATEPATH . '/functions.php' ) )
 264      include ( TEMPLATEPATH . '/functions.php' );
 265  
 266  do_action( 'after_setup_theme' );
 267  
 268  // Load any template functions the theme supports.
 269  require_if_theme_supports( 'post-thumbnails', ABSPATH . WPINC . '/post-thumbnail-template.php' );
 270  
 271  register_shutdown_function( 'shutdown_action_hook' );
 272  
 273  // Set up current user.
 274  $wp->init();
 275  
 276  /**
 277   * Most of WP is loaded at this stage, and the user is authenticated. WP continues
 278   * to load on the init hook that follows (e.g. widgets), and many plugins instantiate
 279   * themselves on it for all sorts of reasons (e.g. they need a user, a taxonomy, etc.).
 280   *
 281   * If you wish to plug an action once WP is loaded, use the wp_loaded hook below.
 282   */
 283  do_action( 'init' );
 284  
 285  // Check site status
 286  if ( is_multisite() ) {
 287      if ( true !== ( $file = ms_site_check() ) ) {
 288          require( $file );
 289          die();
 290      }
 291      unset($file);
 292  }
 293  
 294  /**
 295   * This hook is fired once WP, all plugins, and the theme are fully loaded and instantiated.
 296   *
 297   * AJAX requests should use wp-admin/admin-ajax.php. admin-ajax.php can handle requests for
 298   * users not logged in.
 299   *
 300   * @link http://codex.wordpress.org/AJAX_in_Plugins
 301   *
 302   * @since 3.0.0
 303   */
 304  do_action('wp_loaded');
 305  ?>