global $wpdb, $wp_local_package;

	include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version

	$current = get_site_transient( 'update_core' );

	// Wait 60 seconds between multiple version check requests

	$timeout = 60;

	$time_not_changed = isset( $current->last_checked ) && $timeout > ( time() - $current->last_checked );

	if ( $time_not_changed )

		return false;

	set_site_transient( 'update_core', $current );

	if ( is_multisite( ) ) {

		$user_count = get_user_count( );

		$num_blogs = get_blog_count( );

		$wp_install = network_site_url( );

		$multisite_enabled = 1;

	} else {

		$user_count = count_users( );

		$user_count = $user_count['total_users'];

		$multisite_enabled = 0;

		$num_blogs = 1;

		$wp_install = home_url( '/' );

	}

	$query = array(

		'version'           => $wp_version,

		'php'               => $php_version,

		'locale'            => $locale,

		'mysql'             => $mysql_version,

		'local_package'     => isset( $wp_local_package ) ? $wp_local_package : '',

		'blogs'             => $num_blogs,

		'users'             => $user_count,

		'multisite_enabled' => $multisite_enabled

	);

	$url = 'http://api.wordpress.org/core/version-check/1.6/?' . http_build_query( $query, null, '&' );

		'timeout' => ( ( defined('DOING_CRON') && DOING_CRON ) ? 30 : 3 ),

		'user-agent' => 'WordPress/' . $wp_version . '; ' . home_url( '/' ),

		'headers' => array(

			'wp_install' => $wp_install,

			'wp_blog' => home_url( '/' )

		)

	if ( is_wp_error( $response ) || 200 != wp_remote_retrieve_response_code( $response ) )

	$body = trim( wp_remote_retrieve_body( $response ) );

	$body = maybe_unserialize( $body );

	if ( ! is_array( $body ) || ! isset( $body['offers'] ) )

	$offers = $body['offers'];

	foreach ( $offers as &$offer ) {

		foreach ( $offer as $offer_key => $value ) {

			if ( 'packages' == $offer_key )

				$offer['packages'] = (object) array_intersect_key( array_map( 'esc_url', $offer['packages'] ),

					array_fill_keys( array( 'full', 'no_content', 'new_bundled', 'partial' ), '' ) );

			elseif ( 'download' == $offer_key )

				$offer['download'] = esc_url( $value );

			else

				$offer[ $offer_key ] = esc_html( $value );

		}

		$offer = (object) array_intersect_key( $offer, array_fill_keys( array( 'response', 'download', 'locale',

			'packages', 'current', 'php_version', 'mysql_version', 'new_bundled', 'partial_version' ), '' ) );

	$updates->updates = $offers;

	set_site_transient( 'update_core',  $updates);

 * @uses $wp_version Used to notify the WordPress version.

	include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version

	$active  = get_option( 'active_plugins', array() );

	$current = get_site_transient( 'update_plugins' );

	// Check for update on a different schedule, depending on the page.

	switch ( current_filter() ) {

		case 'load-update-core.php' :

			$timeout = 60; // 1 min

			break;

		case 'load-plugins.php' :

		case 'load-update.php' :

			$timeout = 3600; // 1 hour

			break;

		default :

			$timeout = 43200; // 12 hours

	$time_not_changed = isset( $current->last_checked ) && $timeout > ( time() - $current->last_checked );

	if ( $time_not_changed ) {

		$plugin_changed = false;

		foreach ( $plugins as $file => $p ) {

			$new_option->checked[ $file ] = $p['Version'];

			if ( !isset( $current->checked[ $file ] ) || strval($current->checked[ $file ]) !== strval($p['Version']) )

		}

		if ( isset ( $current->response ) && is_array( $current->response ) ) {

			foreach ( $current->response as $plugin_file => $update_details ) {

				if ( ! isset($plugins[ $plugin_file ]) ) {

					$plugin_changed = true;

					break;

				}

		// Bail if we've checked recently and if nothing has changed

		if ( ! $plugin_changed )

			return false;

	set_site_transient( 'update_plugins', $current );

	$to_send = (object) compact('plugins', 'active');

	if ( is_wp_error( $raw_response ) || 200 != wp_remote_retrieve_response_code( $raw_response ) )

	$response = maybe_unserialize( wp_remote_retrieve_body( $raw_response ) );

	if ( is_array( $response ) )

	set_site_transient( 'update_plugins', $new_option );

 * @uses $wp_version Used to notify the WordPress version.

function wp_update_themes() {

	include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version

	if ( defined( 'WP_INSTALLING' ) )

	$installed_themes = wp_get_themes();

	$last_update = get_site_transient( 'update_themes' );

	if ( ! is_object($last_update) )

		$last_update = new stdClass;

	// Put slug of current theme into request.

	$themes['current_theme'] = get_option( 'stylesheet' );

	foreach ( $installed_themes as $theme ) {

		$checked[ $theme->get_stylesheet() ] = $theme->get('Version');

		$themes[ $theme->get_stylesheet() ] = array(

			'Name'       => $theme->get('Name'),

			'Title'      => $theme->get('Name'),

			'Version'    => $theme->get('Version'),

			'Author'     => $theme->get('Author'),

			'Author URI' => $theme->get('AuthorURI'),

			'Template'   => $theme->get_template(),

			'Stylesheet' => $theme->get_stylesheet(),

		);

	// Check for update on a different schedule, depending on the page.

	switch ( current_filter() ) {

		case 'load-update-core.php' :

			$timeout = 60; // 1 min

			break;

		case 'load-themes.php' :

		case 'load-update.php' :

			$timeout = 3600; // 1 hour

			break;

		default :

			$timeout = 43200; // 12 hours

	$time_not_changed = isset( $last_update->last_checked ) && $timeout > ( time( ) - $last_update->last_checked );

	if ( $time_not_changed ) {

		$theme_changed = false;

		foreach ( $checked as $slug => $v ) {

			$update_request->checked[ $slug ] = $v;

			if ( !isset( $last_update->checked[ $slug ] ) || strval($last_update->checked[ $slug ]) !== strval($v) )

				$theme_changed = true;

		}

		if ( isset ( $last_update->response ) && is_array( $last_update->response ) ) {

			foreach ( $last_update->response as $slug => $update_details ) {

				if ( ! isset($checked[ $slug ]) ) {

					$theme_changed = true;

					break;

				}

			}

		}

		// Bail if we've checked recently and if nothing has changed

		if ( ! $theme_changed )

			return false;

	}

	$last_update->last_checked = time();

	set_site_transient( 'update_themes', $last_update );

	if ( is_wp_error( $raw_response ) || 200 != wp_remote_retrieve_response_code( $raw_response ) )

	$new_update = new stdClass;

	$new_update->last_checked = time( );

	$new_update->checked = $checked;

	$response = maybe_unserialize( wp_remote_retrieve_body( $raw_response ) );

	if ( is_array( $response ) )

		$new_update->response = $response;

	set_site_transient( 'update_themes', $new_update );

}

/*

 * Collect counts and UI strings for available updates

 *

 * @since 3.3.0

 *

 * @return array

 */

function wp_get_update_data() {

	$counts = array( 'plugins' => 0, 'themes' => 0, 'wordpress' => 0 );

	if ( current_user_can( 'update_plugins' ) ) {

		$update_plugins = get_site_transient( 'update_plugins' );

		if ( ! empty( $update_plugins->response ) )

			$counts['plugins'] = count( $update_plugins->response );

	if ( current_user_can( 'update_themes' ) ) {

		$update_themes = get_site_transient( 'update_themes' );

		if ( ! empty( $update_themes->response ) )

			$counts['themes'] = count( $update_themes->response );

	}

	if ( function_exists( 'get_core_updates' ) && current_user_can( 'update_core' ) ) {

		$update_wordpress = get_core_updates( array('dismissed' => false) );

		if ( ! empty( $update_wordpress ) && ! in_array( $update_wordpress[0]->response, array('development', 'latest') ) && current_user_can('update_core') )

			$counts['wordpress'] = 1;

	}

	$counts['total'] = $counts['plugins'] + $counts['themes'] + $counts['wordpress'];

	$update_title = array();

	if ( $counts['wordpress'] )

		$update_title[] = sprintf(__('%d WordPress Update'), $counts['wordpress']);

	if ( $counts['plugins'] )

		$update_title[] = sprintf(_n('%d Plugin Update', '%d Plugin Updates', $counts['plugins']), $counts['plugins']);

	if ( $counts['themes'] )

		$update_title[] = sprintf(_n('%d Theme Update', '%d Theme Updates', $counts['themes']), $counts['themes']);

	$update_title = ! empty( $update_title ) ? esc_attr( implode( ', ', $update_title ) ) : '';

	return array( 'counts' => $counts, 'title' => $update_title );

	include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version

	$current = get_site_transient( 'update_core' );