Run functions from array

runner.php

<?php 
/**
 * Title: Runner
 * Author: Mattias Ghodsian
 * Description: Run given functions from array
 * Donate a cup of coffee: https://www.buymeacoffee.com/mattiasghodsian
 * Donate Eth: 	0xBBB96204E45D11C9799c6B12E6eE6F0d4A071Ef5
 **/
class Runner
{
	
	protected $functions = []; 
	private $debug;

	/**
	 * __construct
	 *
	 * param boolean $debug turn on/off debug
	 */
	function __construct($debug = false)
	{
		$this->debug = $debug;
	}

	/**
	 * add
	 *
	 * param string/array $function string of function or ['class', 'function-name']
	 * param array $args agruments of given function
	 * return null
	 */
	public function add($function, $args = [])
	{
		if (!is_numeric($function) and !is_integer($function)) {
			if (is_string($function) or is_array($function)) {
				$this->functions[] = [
					'name' => $function,
					'args' => $args
				];
			}else{
				die('given function ('.$function.') must be an array or string');
			}
		}else{
			die('given function ('.$function.') must be an array or string');
		}
		
	}

	/**
	 * run()
	 *
	 * return null
	 */
	public function run()
	{
		($this->debug == true ? var_dump($this->functions) : '');

		foreach ($this->functions as $key => $function) {
			if (!empty($function['args'])) {
				call_user_func_array($function['name'], $function['args']);
			}else{
				call_user_func($function['name']);
			}
		}
	}

}
?>

Example:

$runner = New Runner(true);

$runner->add('foobar');
function foobar() {
    echo 'im the '.__FUNCTION__.' function'.PHP_EOL;
}

$runner->add('helloworld');
function helloworld() {
    echo __FUNCTION__.' - '.date('Y', time()).PHP_EOL;
}

$runner->run();