Current File : /home/bravrvjk/solidactfoundation.org/wp-content/plugins/wp-rocket/inc/front//dns-prefetch.php
<?php
defined( 'ABSPATH' ) || exit;
/**
* Adds domain names to the list of DNS Prefetch printed by wp_resource_hints
*
* @since 2.8.9
* @author Remy Perona
*
* @param Array $hints URLs to print for resource hints.
* @param String $relation_type The relation type the URL are printed for.
* @return Array URLs to print
*/
function rocket_dns_prefetch( $hints, $relation_type ) {
// Don't add prefetch for uncached pages.
if ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) {
return $hints;
}
$domains = rocket_get_dns_prefetch_domains();
if ( (bool) $domains ) {
foreach ( $domains as $domain ) {
if ( 'dns-prefetch' === $relation_type ) {
$hints[] = $domain;
}
}
}
return $hints;
}
add_filter( 'wp_resource_hints', 'rocket_dns_prefetch', 10, 2 );
