'Auth token missing.' ), 400 ); } elseif( $device && isset( $device[$fcm_token] ) ) { return true; } else { wp_send_json_error( array( 'error' => 'Invalid Auth Token.' ), 401 ); } } endif; /** * Get MainWP child sites * * @since 2.8.9 */ if( !function_exists( 'post_smtp_mobile_get_child_sites' ) ): function post_smtp_mobile_get_child_sites() { $child_enabled = apply_filters( 'mainwp_extension_enabled_check', __FILE__ ); $child_key = $child_enabled['key']; $sites = apply_filters( 'mainwp_getsites', __FILE__, $child_key ); $site_ids = array(); foreach ( $sites as $site ) { $site_ids[ $site['id'] ] = array( 'siteURL' => $site['url'], 'siteTitle' => $site['name'] ); } return $site_ids ? $site_ids : 0; } endif;