middleware.php

<?php

namespace Component
{
    /**
     * Class Middleware
     * @package Component
     */
    class Middleware
    {
        protected static $callable_array = [];

        /**
         * @param string
         * @param callable
         * @return boolean
         */
        public function register($name, $callable = null)
        {
            if(is_callable($callable)) {
                static::$callable_array[$name] = $callable;
                return true;
            }
            return false;
        }

        /**
         * @param string
         * @return callable|boolean
         */
        public function get($name)
        {
            if(isset(static::$callable_array[$name])) {
                return static::$callable_array[$name];
            }
            return false;
        }
    }
}