An abstract class for wrapping related WP hooks together. For code organization.

Hooks.php

<?php

/**
 * Usage:
 * 
 * class RelatedHooks extends Hooks {
 *
 * 	private $actions = [];
 *	private $filters = [];
 * 
 * }
 *
 * new RelatedHooks();
 * 
 */

abstract class Hooks {

	/**
	 * Actions and filters are arrays of arrays, as follows:
	 * 
	 * 	[
	 * 		'hook'	   => string, the WordPress hook to attach to
	 * 		'callback' => string, object method or WordPress magic function
	 * 		'priority' => (optional) int, the hooks priority
	 * 		'args' 	   => (optional) int, argument count
	 * 	]
	 * 
	 * For more details, see https://developer.wordpress.org/plugins/hooks/actions/
	 * 
	 */

	protected $actions = [];
	protected $filters = [];

	public function __construct() {
		$this->hook('actions');
		$this->hook('filters');
		return $this;
	}

	private function hook( $type ) {
		foreach( $this->$type as $args ) {

			// Callback must be defined
			if( empty( $args['callback'] ) || empty( $args['hook'] ) ) continue;

			$hook = $args['hook'];

			// Allow for WordPress magic function
			$callback = ( $args['callback'] == '__return_false' ?: [ $this, $args['callback'] ] );

			// Priority and argument count defaults
			$priority = ($args['priority'] ?? 10);
			$args_count = ($args['args'] ?? 1);

			if( $type == 'actions') {
				$this->addAction( $hook, $callback, $priority, $args_count );
			}
			else if( $type == 'filters') {
				$this->addFilter( $hook, $callback, $priority, $args_count );
			}
		}
	}

	private function addAction( $hook, $callback, $priority, $args_count ) {
		return add_action( $hook, $callback, $priority, $args_count );
	}

	private function addFilter( $hook, $callback, $priority, $args_count ) {
		return add_filter( $hook, $callback, $priority, $args_count );
	}

}