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/**
 * Used to set up and fix common variables and include
 * the WordPress procedural and class library.
 *
 * Allows for some configuration in wp-config.php (see default-constants.php)
 *
 * @internal This file must be parsable by PHP4.
 *
 * @package WordPress
 */


/**
 * Stores the location of the WordPress directory of functions, classes, and core content.
 *
 * @since 1.0.0
 */
define( 'WPINC', 'wp-includes' );


// Include files required for initialization.
require( ABSPATH . WPINC . '/load.php' );
require( ABSPATH . WPINC . '/default-constants.php' );
require( ABSPATH . WPINC . '/version.php' );


// Set initial default constants including WP_MEMORY_LIMIT, WP_MAX_MEMORY_LIMIT, WP_DEBUG, WP_CONTENT_DIR and WP_CACHE.
wp_initial_constants( );


// Check for the required PHP version and for the MySQL extension or a database drop-in.
wp_check_php_mysql_versions();


// Disable magic quotes at runtime. Magic quotes are added using wpdb later in wp-settings.php.
set_magic_quotes_runtime( 0 );
@ini_set( 'magic_quotes_sybase', 0 );


// Set default timezone in PHP 5.
if ( function_exists( 'date_default_timezone_set' ) )
	date_default_timezone_set( 'UTC' );


// Turn register_globals off.
wp_unregister_GLOBALS();


// Ensure these global variables do not exist so they do not interfere with WordPress.
unset( $wp_filter, $cache_lastcommentmodified );


// Standardize $_SERVER variables across setups.
wp_fix_server_vars();


// Check if we have received a request due to missing favicon.ico
wp_favicon_request();


// Check if we're in maintenance mode.
wp_maintenance();


// Start loading timer.
timer_start();


// Check if we're in WP_DEBUG mode.
wp_debug_mode();


// For an advanced caching plugin to use. Uses a static drop-in because you would only want one.
if ( WP_CACHE )
	WP_DEBUG ? include( WP_CONTENT_DIR . '/advanced-cache.php' ) : @include( WP_CONTENT_DIR . '/advanced-cache.php' );


// Define WP_LANG_DIR if not set.
wp_set_lang_dir();


// Load early WordPress files.
require( ABSPATH . WPINC . '/compat.php' );
require( ABSPATH . WPINC . '/functions.php' );
require( ABSPATH . WPINC . '/class-wp.php' );
require( ABSPATH . WPINC . '/class-wp-error.php' );
require( ABSPATH . WPINC . '/plugin.php' );


// Include the wpdb class and, if present, a db.php database drop-in.
require_wp_db();


// Set the database table prefix and the format specifiers for database table columns.
wp_set_wpdb_vars();


// Start the WordPress object cache, or an external object cache if the drop-in is present.
wp_start_object_cache();


// Load early WordPress files.
require( ABSPATH . WPINC . '/default-filters.php' );
require( ABSPATH . WPINC . '/pomo/mo.php' );


// Initialize multisite if enabled.
if ( is_multisite() ) {
	require( ABSPATH . WPINC . '/ms-blogs.php' );
	require( ABSPATH . WPINC . '/ms-settings.php' );
} elseif ( ! defined( 'MULTISITE' ) ) {
	define( 'MULTISITE', false );
}