Filter hook 'wp_resource_hints'

Hook Information

Hook Parameters

Usage Examples

<?php
// Hook into wp_resource_hints
add_filter('wp_resource_hints', 'my_custom_filter', 10, 2);

function my_custom_filter($urls, $relation_type) {
    // Your custom filtering logic here
    return $urls;
}

Source Code Context

<?php
3644  		 *     }
3645  		 * }
3646  		 * @param string $relation_type The relation type the URLs are printed for. One of
3647  		 *                              'dns-prefetch', 'preconnect', 'prefetch', or 'prerender'.
3648  		 */
3649  		$urls = apply_filters( 'wp_resource_hints', $urls, $relation_type );
3650  
3651  		foreach ( $urls as $key => $url ) {
3652  			$atts = array();
3653  
3654  			if ( is_array( $url ) ) {

PHP Documentation

<?php
/**
		 * Filters domains and URLs for resource hints of the given relation type.
		 *
		 * @since 4.6.0
		 * @since 4.7.0 The `$urls` parameter accepts arrays of specific HTML attributes
		 *              as its child elements.
		 *
		 * @param array  $urls {
		 *     Array of resources and their attributes, or URLs to print for resource hints.
		 *
		 *     @type array|string ...$0 {
		 *         Array of resource attributes, or a URL string.
		 *
		 *         @type string $href        URL to include in resource hints. Required.
		 *         @type string $as          How the browser should treat the resource
		 *                                   (`script`, `style`, `image`, `document`, etc).
		 *         @type string $crossorigin Indicates the CORS policy of the specified resource.
		 *         @type float  $pr          Expected probability that the resource hint will be used.
		 *         @type string $type        Type of the resource (`text/html`, `text/css`, etc).
		 *     }
		 * }
		 * @param string $relation_type The relation type the URLs are printed for. One of
		 *                              'dns-prefetch', 'preconnect', 'prefetch', or 'prerender'.
		 */