Definition:
function wp_update_themes() {}
Check theme versions against the latest versions hosted on WordPress.org.
A list of all themes installed in sent to WP. Checks against the WordPress server at api.wordpress.org. Will only check if WordPress isn’t installing.
Return values
returns:Returns null if update is unsupported. Returns false if check is too soon.
Source code
function wp_update_themes() { include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version if ( defined( 'WP_INSTALLING' ) ) return false; if ( !function_exists( 'get_themes' ) ) require_once( ABSPATH . 'wp-includes/theme.php' ); $installed_themes = get_themes( ); $last_update = get_site_transient( 'update_themes' ); if ( ! is_object($last_update) ) $last_update = new stdClass; // Check for updated every 60 minutes if hitting update pages; else, check every 12 hours. $timeout = in_array( current_filter(), array( 'load-themes.php', 'load-update.php', 'load-update-core.php' ) ) ? 3600 : 43200; $time_not_changed = isset( $last_update->last_checked ) && $timeout > ( time( ) - $last_update->last_checked ); $themes = array(); $checked = array(); $exclude_fields = array('Template Files', 'Stylesheet Files', 'Status', 'Theme Root', 'Theme Root URI', 'Template Dir', 'Stylesheet Dir', 'Description', 'Tags', 'Screenshot'); // Put slug of current theme into request. $themes['current_theme'] = get_option( 'stylesheet' ); foreach ( (array) $installed_themes as $theme_title => $theme ) { $themes[$theme['Stylesheet']] = array(); $checked[$theme['Stylesheet']] = $theme['Version']; $themes[$theme['Stylesheet']]['Name'] = $theme['Name']; $themes[$theme['Stylesheet']]['Version'] = $theme['Version']; foreach ( (array) $theme as $key => $value ) { if ( !in_array($key, $exclude_fields) ) $themes[$theme['Stylesheet']][$key] = $value; } } $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; } } } if ( $time_not_changed && !$theme_changed ) return false; // Update last_checked for current to prevent multiple blocking requests if request hangs $last_update->last_checked = time(); set_site_transient( 'update_themes', $last_update ); $options = array( 'timeout' => ( ( defined('DOING_CRON') && DOING_CRON ) ? 30 : 3), 'body' => array( 'themes' => serialize( $themes ) ), 'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ) ); $raw_response = wp_remote_post( 'http://api.wordpress.org/themes/update-check/1.0/', $options ); if ( is_wp_error( $raw_response ) || 200 != wp_remote_retrieve_response_code( $raw_response ) ) return false; $new_update = new stdClass; $new_update->last_checked = time( ); $new_update->checked = $checked; $response = unserialize( wp_remote_retrieve_body( $raw_response ) ); if ( false !== $response ) $new_update->response = $response; set_site_transient( 'update_themes', $new_update ); }
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