How to use enclosure_links filter in WordPress

When working with WordPress, you might come across various hooks that can help you customize and enhance your website functionality. One such hook is the enclosure_links filter. This hook allows you to add or remove potential enclosures that save to postmeta before checking the database for existing enclosures.

To use the enclosure_links filter, first, you have to register it using add_filter. You can place this code in the functions.php file of your active theme or create a custom WordPress plugin. Creating a custom plugin is often preferred to ensure nothing breaks during theme updates.

Parameters

Below are the two parameters required to use this hook:

• $post_links: (string[]) An array of enclosure links.
• $post_ID: (int) Post ID.

Example 1: Modifying Enclosure Links

In this example, we define a function weplugins_modify_enclosure_links_defaults which takes two parameters. It is registered using add_filter. The first parameter enclosure_links is the name of the hook, the second parameter is the function name, the third parameter is the priority, and the last parameter is the number of arguments to be passed to the function.

    function weplugins_modify_enclosure_links_defaults($post_links, $post_ID) { 
        // Update the $post_links variable according to your website requirements and return this variable.
        return $post_links; 
    }
    // add the filter
    add_filter( "enclosure_links", "weplugins_modify_enclosure_links_defaults", 10, 2 );
    

Example 2: Removing a Hook Callback

If you need to remove a registered hook, you can use remove_filter as shown below. Ensure you provide the same callback function name, priority, and number of arguments while removing the hook callback.

    remove_filter( "enclosure_links", "weplugins_modify_enclosure_links_defaults", 10, 2 );
    

Example 3: Conditional Modification of Enclosure Links

This example demonstrates how you can conditionally modify the $post_links variable based on specific requirements of your website.

    function weplugins_conditional_modify_enclosure_links($post_links, $post_ID) {
        if($post_ID % 2 == 0) { // Example condition
            // Modify $post_links for even post IDs
        }
        return $post_links;
    }
    // add the filter
    add_filter( "enclosure_links", "weplugins_conditional_modify_enclosure_links", 10, 2 );
    

Contact Us

If you need any customization or help using this hook, feel free to contact us.