Passing parameters by their names, like some languages allow.

parameter trash

<?php

function _f($callback,$arguments) {

	if(!is_callable($callback))throw new Exception('Function '.$callback.' does not exist.');
	
    $params = new ReflectionFunction($callback);
	$params = $params->getParameters();
    $argNames = array(); foreach ($params as $param){
		$argNames[] = $param->name;
	}
	$argArray=array();
	
	
	foreach($argNames as $name){
		if(isset($arguments[$name]))$argArray[$name]=$arguments[$name];
		else throw new Exception('Not all required parameters passed. '.$key.' is missing');
	}
	
    return call_user_func_array($callback,$argArray);
}

function test($name,$surname){
	echo($name.' '.$surname.'<br/>');
}

_f('test',array('name'=>'Ilia','surname'=>'Andrienko'));
_f('test',array('surname'=>'Andrienko','name'=>'Ilia'));

?>