Using WordPress ‘get_the_guid’ PHP filter

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The get_the_guid WordPress PHP filter allows you to modify the Global Unique Identifier (GUID) of a post.

Usage

add_filter('get_the_guid', 'your_custom_function', 10, 2);

function your_custom_function($post_guid, $post_id) {
    // your custom code here

    return $post_guid;
}

Parameters

  • $post_guid (string) – Global Unique Identifier (GUID) of the post.
  • $post_id (int) – The post ID.

More information

See WordPress Developer Resources: get_the_guid

Examples

Add a custom prefix to the GUID

Add a custom prefix to the GUID for all posts.

add_filter('get_the_guid', 'custom_prefix_guid', 10, 2);

function custom_prefix_guid($post_guid, $post_id) {
    $post_guid = 'custom_prefix-' . $post_guid;

    return $post_guid;
}

Change the GUID format

Change the GUID format to include the post ID and the current date.

add_filter('get_the_guid', 'change_guid_format', 10, 2);

function change_guid_format($post_guid, $post_id) {
    $current_date = date('Y-m-d');
    $post_guid = "http://yourwebsite.com/?p={$post_id}&date={$current_date}";

    return $post_guid;
}

Add a custom domain to the GUID

Replace the current domain in the GUID with a custom domain.

add_filter('get_the_guid', 'custom_domain_guid', 10, 2);

function custom_domain_guid($post_guid, $post_id) {
    $post_guid = str_replace('http://yourwebsite.com', 'http://customdomain.com', $post_guid);

    return $post_guid;
}

Update GUID only for a specific post type

Update the GUID format only for a specific post type, e.g., “product”.

add_filter('get_the_guid', 'specific_post_type_guid', 10, 2);

function specific_post_type_guid($post_guid, $post_id) {
    $post_type = get_post_type($post_id);

    if ($post_type == 'product') {
        $post_guid = "http://yourwebsite.com/product/{$post_id}";
    }

    return $post_guid;
}

Add a custom suffix to the GUID

Add a custom suffix to the GUID for all posts.

add_filter('get_the_guid', 'custom_suffix_guid', 10, 2);

function custom_suffix_guid($post_guid, $post_id) {
    $post_guid = $post_guid . '-custom_suffix';

    return $post_guid;
}