<?php

/**

 * These functions are needed to load WordPress.

 *

 * @internal This file must be parsable by PHP4.

 *

 * @package WordPress

 */

/**

 * Turn register globals off.

 *

 * @access private

 * @since 2.1.0

 * @return null Will return null if register_globals PHP directive was disabled

 */

function wp_unregister_GLOBALS() {

	if ( !ini_get( 'register_globals' ) )

		return;

	if ( isset( $_REQUEST['GLOBALS'] ) )

		die( 'GLOBALS overwrite attempt detected' );

	// Variables that shouldn't be unset

	$no_unset = array( 'GLOBALS', '_GET', '_POST', '_COOKIE', '_REQUEST', '_SERVER', '_ENV', '_FILES', 'table_prefix' );

	$input = array_merge( $_GET, $_POST, $_COOKIE, $_SERVER, $_ENV, $_FILES, isset( $_SESSION ) && is_array( $_SESSION ) ? $_SESSION : array() );

	foreach ( $input as $k => $v )

		if ( !in_array( $k, $no_unset ) && isset( $GLOBALS[$k] ) ) {

			unset( $GLOBALS[$k] );

		}

}

/**

 * Fix $_SERVER variables for various setups.

 *

 * @access private

 * @since 3.0.0

 */

function wp_fix_server_vars() {

	global $PHP_SELF;

	$default_server_values = array(

		'SERVER_SOFTWARE' => '',

		'REQUEST_URI' => '',

	);

	$_SERVER = array_merge( $default_server_values, $_SERVER );

	// Fix for IIS when running with PHP ISAPI

	if ( empty( $_SERVER['REQUEST_URI'] ) || ( php_sapi_name() != 'cgi-fcgi' && preg_match( '/^Microsoft-IIS\//', $_SERVER['SERVER_SOFTWARE'] ) ) ) {

		// IIS Mod-Rewrite

		if ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) ) {

			$_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_ORIGINAL_URL'];

		}

		// IIS Isapi_Rewrite

		else if ( isset( $_SERVER['HTTP_X_REWRITE_URL'] ) ) {

			$_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_REWRITE_URL'];

		} else {

			// Use ORIG_PATH_INFO if there is no PATH_INFO

			if ( !isset( $_SERVER['PATH_INFO'] ) && isset( $_SERVER['ORIG_PATH_INFO'] ) )

				$_SERVER['PATH_INFO'] = $_SERVER['ORIG_PATH_INFO'];

			// Some IIS + PHP configurations puts the script-name in the path-info (No need to append it twice)

			if ( isset( $_SERVER['PATH_INFO'] ) ) {

				if ( $_SERVER['PATH_INFO'] == $_SERVER['SCRIPT_NAME'] )

					$_SERVER['REQUEST_URI'] = $_SERVER['PATH_INFO'];

				else

					$_SERVER['REQUEST_URI'] = $_SERVER['SCRIPT_NAME'] . $_SERVER['PATH_INFO'];

			}

			// Append the query string if it exists and isn't null

			if ( ! empty( $_SERVER['QUERY_STRING'] ) ) {

				$_SERVER['REQUEST_URI'] .= '?' . $_SERVER['QUERY_STRING'];

			}

		}

	}

	// Fix for PHP as CGI hosts that set SCRIPT_FILENAME to something ending in php.cgi for all requests

	if ( isset( $_SERVER['SCRIPT_FILENAME'] ) && ( strpos( $_SERVER['SCRIPT_FILENAME'], 'php.cgi' ) == strlen( $_SERVER['SCRIPT_FILENAME'] ) - 7 ) )

		$_SERVER['SCRIPT_FILENAME'] = $_SERVER['PATH_TRANSLATED'];

	// Fix for Dreamhost and other PHP as CGI hosts

	if ( strpos( $_SERVER['SCRIPT_NAME'], 'php.cgi' ) !== false )

		unset( $_SERVER['PATH_INFO'] );

	// Fix empty PHP_SELF

	$PHP_SELF = $_SERVER['PHP_SELF'];

	if ( empty( $PHP_SELF ) )

		$_SERVER['PHP_SELF'] = $PHP_SELF = preg_replace( '/(\?.*)?$/', '', $_SERVER["REQUEST_URI"] );

}

/**

 * Check for the required PHP version, and the MySQL extension or a database drop-in.

 *

 * Dies if requirements are not met.

 *

 * @access private

 * @since 3.0.0

 */

function wp_check_php_mysql_versions() {

	global $required_php_version, $wp_version;

	$php_version = phpversion();

	if ( version_compare( $required_php_version, $php_version, '>' ) ) {

		wp_load_translations_early();

		die( sprintf( __( 'Your server is running PHP version %1$s but WordPress %2$s requires at least %3$s.' ), $php_version, $wp_version, $required_php_version ) );

	}

	if ( ! extension_loaded( 'mysql' ) && ! file_exists( WP_CONTENT_DIR . '/db.php' ) ) {

		wp_load_translations_early();

		die( __( 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' ) );

	}

}

/**

 * Don't load all of WordPress when handling a favicon.ico request.

 * Instead, send the headers for a zero-length favicon and bail.

 *

 * @since 3.0.0

 */

function wp_favicon_request() {

	if ( '/favicon.ico' == $_SERVER['REQUEST_URI'] ) {

		header('Content-Type: image/vnd.microsoft.icon');

		header('Content-Length: 0');

		exit;

	}

}

/**

 * Dies with a maintenance message when conditions are met.

 *

 * Checks for a file in the WordPress root directory named ".maintenance".

 * This file will contain the variable $upgrading, set to the time the file

 * was created. If the file was created less than 10 minutes ago, WordPress

 * enters maintenance mode and displays a message.

 *

 * The default message can be replaced by using a drop-in (maintenance.php in

 * the wp-content directory).

 *

 * @access private

 * @since 3.0.0

 */

function wp_maintenance() {

	if ( !file_exists( ABSPATH . '.maintenance' ) || defined( 'WP_INSTALLING' ) )

		return;

	global $upgrading;

	include( ABSPATH . '.maintenance' );

	// If the $upgrading timestamp is older than 10 minutes, don't die.

	if ( ( time() - $upgrading ) >= 600 )

		return;

	if ( file_exists( WP_CONTENT_DIR . '/maintenance.php' ) ) {

		require_once( WP_CONTENT_DIR . '/maintenance.php' );

		die();

	}

	wp_load_translations_early();

	$protocol = $_SERVER["SERVER_PROTOCOL"];

	if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol )

		$protocol = 'HTTP/1.0';

	header( "$protocol 503 Service Unavailable", true, 503 );

	header( 'Content-Type: text/html; charset=utf-8' );

	header( 'Retry-After: 600' );

?>

	<!DOCTYPE html>

	<html xmlns="http://www.w3.org/1999/xhtml"<?php if ( is_rtl() ) echo ' dir="rtl"'; ?>>

	<head>

	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

		<title><?php _e( 'Maintenance' ); ?></title>

	</head>

	<body>

		<h1><?php _e( 'Briefly unavailable for scheduled maintenance. Check back in a minute.' ); ?></h1>

	</body>

	</html>

<?php

	die();

}

/**

 * PHP 5 standard microtime start capture.

 *

 * @access private

 * @since 0.71

 * @global float $timestart Seconds from when function is called.

 * @return bool Always returns true.

 */

function timer_start() {

	global $timestart;

	$timestart = microtime( true );

	return true;

}

/**

 * Return and/or display the time from the page start to when function is called.

 *

 * You can get the results and print them by doing:

 * <code>

 * $nTimePageTookToExecute = timer_stop();

 * echo $nTimePageTookToExecute;

 * </code>

 *

 * Or instead, you can do:

 * <code>

 * timer_stop(1);

 * </code>

 * which will do what the above does. If you need the result, you can assign it to a variable, but

 * in most cases, you only need to echo it.

 *

 * @since 0.71

 * @global float $timestart Seconds from when timer_start() is called

 * @global float $timeend Seconds from when function is called

 *

 * @param int $display Use '0' or null to not echo anything and 1 to echo the total time

 * @param int $precision The amount of digits from the right of the decimal to display. Default is 3.

 * @return float The "second.microsecond" finished time calculation

 */

function timer_stop( $display = 0, $precision = 3 ) { // if called like timer_stop(1), will echo $timetotal

	global $timestart, $timeend;

	$timeend = microtime( true );

	$timetotal = $timeend - $timestart;

	$r = ( function_exists( 'number_format_i18n' ) ) ? number_format_i18n( $timetotal, $precision ) : number_format( $timetotal, $precision );

	if ( $display )

		echo $r;

	return $r;

}

/**

 * Sets PHP error handling and handles WordPress debug mode.

 *

 * Uses three constants: WP_DEBUG, WP_DEBUG_DISPLAY, and WP_DEBUG_LOG. All three can be

 * defined in wp-config.php. Example: <code> define( 'WP_DEBUG', true ); </code>

 *

 * WP_DEBUG_DISPLAY and WP_DEBUG_LOG perform no function unless WP_DEBUG is true.

 * WP_DEBUG defaults to false.

 *

 * When WP_DEBUG is true, all PHP notices are reported. WordPress will also display

 * notices, including one when a deprecated WordPress function, function argument,

 * or file is used. Deprecated code may be removed from a later version.

 *

 * It is strongly recommended that plugin and theme developers use WP_DEBUG in their

 * development environments.

 *

 * When WP_DEBUG_DISPLAY is true, WordPress will force errors to be displayed.

 * WP_DEBUG_DISPLAY defaults to true. Defining it as null prevents WordPress from

 * changing the global configuration setting. Defining WP_DEBUG_DISPLAY as false

 * will force errors to be hidden.

 *

 * When WP_DEBUG_LOG is true, errors will be logged to wp-content/debug.log.

 * WP_DEBUG_LOG defaults to false.

 *

 * Errors are never displayed for XML-RPC requests.

 *

 * @access private

 * @since 3.0.0

 */

function wp_debug_mode() {

	if ( WP_DEBUG ) {

		error_reporting( E_ALL );

		if ( WP_DEBUG_DISPLAY )

			ini_set( 'display_errors', 1 );

		elseif ( null !== WP_DEBUG_DISPLAY )

			ini_set( 'display_errors', 0 );

		if ( WP_DEBUG_LOG ) {

			ini_set( 'log_errors', 1 );

			ini_set( 'error_log', WP_CONTENT_DIR . '/debug.log' );

		}

	} else {

		error_reporting( E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR );

	}

	if ( defined( 'XMLRPC_REQUEST' ) )

		ini_set( 'display_errors', 0 );

}

/**

 * Sets the location of the language directory.

 *

 * To set directory manually, define <code>WP_LANG_DIR</code> in wp-config.php.

 *

 * If the language directory exists within WP_CONTENT_DIR, that is used.

 * Otherwise if the language directory exists within WPINC, that's used.

 * Finally, if neither of the preceding directories are found,

 * WP_CONTENT_DIR/languages is used.

 *

 * The WP_LANG_DIR constant was introduced in 2.1.0.

 *

 * @access private

 * @since 3.0.0

 */

function wp_set_lang_dir() {

	if ( !defined( 'WP_LANG_DIR' ) ) {

		if ( file_exists( WP_CONTENT_DIR . '/languages' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) || !@is_dir(ABSPATH . WPINC . '/languages') ) {

			define( 'WP_LANG_DIR', WP_CONTENT_DIR . '/languages' ); // no leading slash, no trailing slash, full path, not relative to ABSPATH

			if ( !defined( 'LANGDIR' ) ) {

				// Old static relative path maintained for limited backwards compatibility - won't work in some cases

				define( 'LANGDIR', 'wp-content/languages' );

			}

		} else {

			define( 'WP_LANG_DIR', ABSPATH . WPINC . '/languages' ); // no leading slash, no trailing slash, full path, not relative to ABSPATH

			if ( !defined( 'LANGDIR' ) ) {

				// Old relative path maintained for backwards compatibility

				define( 'LANGDIR', WPINC . '/languages' );

			}

		}

	}

}

/**

 * Load the correct database class file.

 *

 * This function is used to load the database class file either at runtime or by

 * wp-admin/setup-config.php. We must globalize $wpdb to ensure that it is

 * defined globally by the inline code in wp-db.php.

 *

 * @since 2.5.0

 * @global $wpdb WordPress Database Object

 */

function require_wp_db() {

	global $wpdb;

	require_once( ABSPATH . WPINC . '/wp-db.php' );

	if ( file_exists( WP_CONTENT_DIR . '/db.php' ) )

		require_once( WP_CONTENT_DIR . '/db.php' );

	if ( isset( $wpdb ) )

		return;

	$wpdb = new wpdb( DB_USER, DB_PASSWORD, DB_NAME, DB_HOST );

}

/**

 * Sets the database table prefix and the format specifiers for database table columns.

 *

 * Columns not listed here default to %s.

 *

 * @see wpdb::$field_types Since 2.8.0

 * @see wpdb::prepare()

 * @see wpdb::insert()

 * @see wpdb::update()

 * @see wpdb::set_prefix()

 *

 * @access private

 * @since 3.0.0

 */

function wp_set_wpdb_vars() {

	global $wpdb, $table_prefix;

	if ( !empty( $wpdb->error ) )

		dead_db();

	$wpdb->field_types = array( 'post_author' => '%d', 'post_parent' => '%d', 'menu_order' => '%d', 'term_id' => '%d', 'term_group' => '%d', 'term_taxonomy_id' => '%d',

		'parent' => '%d', 'count' => '%d','object_id' => '%d', 'term_order' => '%d', 'ID' => '%d', 'comment_ID' => '%d', 'comment_post_ID' => '%d', 'comment_parent' => '%d',

		'user_id' => '%d', 'link_id' => '%d', 'link_owner' => '%d', 'link_rating' => '%d', 'option_id' => '%d', 'blog_id' => '%d', 'meta_id' => '%d', 'post_id' => '%d',

		'user_status' => '%d', 'umeta_id' => '%d', 'comment_karma' => '%d', 'comment_count' => '%d',

		// multisite:

		'active' => '%d', 'cat_id' => '%d', 'deleted' => '%d', 'lang_id' => '%d', 'mature' => '%d', 'public' => '%d', 'site_id' => '%d', 'spam' => '%d',

	);

	$prefix = $wpdb->set_prefix( $table_prefix );

	if ( is_wp_error( $prefix ) ) {

		wp_load_translations_early();

		wp_die( __( '<strong>ERROR</strong>: <code>$table_prefix</code> in <code>wp-config.php</code> can only contain numbers, letters, and underscores.' ) );

	}

}

/**

 * Access/Modify private global variable $_wp_using_ext_object_cache

 *

 * Toggle $_wp_using_ext_object_cache on and off without directly touching global

 *

 * @since 3.7.0

 *

 * @param bool $using Whether external object cache is being used

 * @return bool The current 'using' setting

 */

function wp_using_ext_object_cache( $using = null ) {

	global $_wp_using_ext_object_cache;

	$current_using = $_wp_using_ext_object_cache;

	if ( null !== $using )

		$_wp_using_ext_object_cache = $using;

	return $current_using;

}

/**

 * Starts the WordPress object cache.

 *

 * If an object-cache.php file exists in the wp-content directory,

 * it uses that drop-in as an external object cache.

 *

 * @access private

 * @since 3.0.0

 */

function wp_start_object_cache() {

	global $blog_id;

	$first_init = false;

 	if ( ! function_exists( 'wp_cache_init' ) ) {

		if ( file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) {

			require_once ( WP_CONTENT_DIR . '/object-cache.php' );

			if ( function_exists( 'wp_cache_init' ) )

				wp_using_ext_object_cache( true );

		}

		$first_init = true;

	} else if ( ! wp_using_ext_object_cache() && file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) {

		// Sometimes advanced-cache.php can load object-cache.php before it is loaded here.

		// This breaks the function_exists check above and can result in $_wp_using_ext_object_cache

		// being set incorrectly. Double check if an external cache exists.

		wp_using_ext_object_cache( true );

	}

	if ( ! wp_using_ext_object_cache() )

		require_once ( ABSPATH . WPINC . '/cache.php' );

	// If cache supports reset, reset instead of init if already initialized.

	// Reset signals to the cache that global IDs have changed and it may need to update keys

	// and cleanup caches.

	if ( ! $first_init && function_exists( 'wp_cache_switch_to_blog' ) )

		wp_cache_switch_to_blog( $blog_id );

	elseif ( function_exists( 'wp_cache_init' ) )

		wp_cache_init();

	if ( function_exists( 'wp_cache_add_global_groups' ) ) {