How to prevent Wordpress from abbreviating long slugs?

Without you sharing a post title and its resulting slug to see what is happening, I can only guess. But a lot of the time stop words, or extremely common words, are stripped from slugs. This would be words like the, a, an, etc. The plugin Yoast SEO will do this if you’re running it as well.

You can override WordPress’ behavior though with the save_post hook though.

function my_custom_slug( $post_id ) {
    if ( ! wp_post_revision( $post_id ) ) {

    // Temporarily Unhook to Prevent Infinite Loop
    remove_action( 'save_post', 'my_custom_slug' );

    // Set the new Post Slug
    $my_slug =  sanitize_title( get_the_post_title( $post_id ) );

    // Update the Slug
    wp_update_post( array(
        'ID' => $post_id,
        'post_name' => $my_slug,
    ) );

    // Rehook
    add_action( 'save_post', 'my_custom_slug' );

    }
}

add_action( 'save_post', 'my_custom_slug' );

So what this code will do is, when the post is saved, take the post_title (e.g. This is the title of my post), sanitize it by removing HTML/PHP code as well as special characters, making it all lower-case letters, and converting all white space to -, storing it as $my_slug. So using my example, the title would become this-is-the-title-of-my-post. Then it will update the post_name, which contains the slug with the value of $my_slug.

NOTE: If you’re doing this with a custom post type, the procedure is a little bit different and will need some changes and additional code in order to work.

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