Automatically add the focus keyword to a product from the product title

Hello,

I apologize for the issue you are facing with the script and the error messages. It seems like there might be a couple of issues with the code or the way it’s being implemented. Here’s a corrected version of your script that should work without errors:

/**
 * Function to automatically update the focus keyword with the product title
 */
function update_focus_keywords() {
    $products = get_posts(array(
        'posts_per_page' => -1,
        'post_type' => 'product' // replace post with the name of your post type
    ));
    foreach ($products as $p) {
        update_post_meta($p->ID, 'rank_math_focus_keyword', strtolower(get_the_title($p->ID)));
    }
}
add_action('init', 'update_focus_keywords');

Key Changes:

1. Corrected HTML Entities: Ensure that you are using => instead of => and $p->ID instead of $p->ID. This is crucial as using HTML entities can cause syntax errors in PHP.
2. Error Handling: If you continue to receive errors, it may be beneficial to check your server’s error logs for more details on what might be causing the issue.
3. JSON Response Error: The "Updating failed. The response is not a valid JSON response" error can sometimes occur due to issues with permalinks or server settings. You might want to try resetting your permalinks by going to Settings → Permalinks in your WordPress dashboard and simply clicking Save Changes without making any changes.

If you still encounter issues after trying these steps, please reply to this ticket, and a human agent from the Rank Math Support team will assist you further. If possible, include your site URL in your reply for more tailored assistance.

Thank you for raising this concern!

Sources:
How to Automate the Insertion of Focus Keyword » Rank Math

Hello,

Thank you for contacting Rank Math support.

You will have to create the rank-math.php file in your theme’s folder. Here is a guide that can help: https://rankmath.com/kb/wordpress-hooks-actions-filters/#rank-math-php-file

You can also use a plugin like Code Snippets to add the code.

Let us know how it goes. Looking forward to helping you.

Thank you.