Using WordPress ‘parent_post_rel_link’ PHP filter

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The parent_post_rel_link WordPress PHP filter allows you to modify the “rel” attribute for the parent post navigation link.

Usage

add_filter('parent_post_rel_link', 'modify_parent_post_rel_link');

function modify_parent_post_rel_link($link) {
    // your custom code here
    return $link;
}

Parameters

  • $link (string): The HTML anchor element containing the parent post navigation link.

More information

See WordPress Developer Resources: parent_post_rel_link

Examples

Change the ‘rel’ attribute value

Update the “rel” attribute value of the parent post navigation link:

add_filter('parent_post_rel_link', 'change_rel_attribute_value');

function change_rel_attribute_value($link) {
    return str_replace('rel="parent"', 'rel="alternate"', $link);
}

Add a custom class to the parent post link

Add a custom CSS class to the parent post navigation link:

add_filter('parent_post_rel_link', 'add_custom_class_to_parent_link');

function add_custom_class_to_parent_link($link) {
    return str_replace('<a ', '<a class="custom-class" ', $link);
}

Add a custom data attribute

Add a custom “data” attribute to the parent post navigation link:

add_filter('parent_post_rel_link', 'add_custom_data_attribute');

function add_custom_data_attribute($link) {
    return str_replace('<a ', '<a data-custom="value" ', $link);
}

Change the parent post link text

Modify the text of the parent post navigation link:

add_filter('parent_post_rel_link', 'change_parent_link_text');

function change_parent_link_text($link) {
    return preg_replace('/>([^<]+)</', '>New Link Text<', $link);
}

Remove the parent post link

Completely remove the parent post navigation link:

add_filter('parent_post_rel_link', 'remove_parent_link');

function remove_parent_link($link) {
    return '';
}