Solution for ‘Just in time’ WordPress Hooks.

Solution for ‘Just in time’ WordPress Hooks.


Solution for ‘Just in time’ WordPress Hooks.

Clarkson-hooks combines the all action and composer autoloading to only include the filters you are actually going to use.


1. Define clarkson-hooks as a dependency.

composer require level-level/clarkson-hooks

It will load automatically.

2. Point Composer towards a directory to find your Hooks namespace.

"autoload": {
        "Hooks\": "app/Hooks"

3. Define a hook

Example minimal init.php (put this in app/Hooks/init.php when using path specified in composer above.

namespace Hooks;

use ClarksonHooksiHook;

class init implements iHook {
    public static function register_hooks( $name ){
        add_action('init', function(){
            wp_die('Hello world');

Note: the ClarksonHooksiHook interface makes sure you correctly define your Hook object.

For a real live example, check out the init hook in Clarkson Theme.

What happens in the background

  1. An apply_filters or do_action is called from WordPress.
  2. Just before the actual hook is triggered, the do_action('all') is caught by Clarkson-hooks.
  3. Clarkson-hooks checks for the existence of Hooks{hook-tag} (Composer handles loading any corresponding file).
  4. The correspondig class gets the static method register_hooks called. The actual add_filter or add_action is done in this file.
  5. WordPress continues as expected.


Be sure to use the --optimize-autoloader composer flag on production to have the loading process moving smoothly. Otherwise the class_exists function creates a lot of overhead.

All hooks initialize only once.


Add a Comment

Tu dirección de correo electrónico no será publicada. Los campos obligatorios están marcados con *