Slet entry i array

Kode 

<?php
	function recursiveUnset($needle,&$haystack) {
		foreach($haystack as $key => $value) {
			if(is_array($value) && recursiveUnset($needle,&$value)) {
				$haystack[$key] = $value;
				return true;
			} else {
				if($value === $needle) {
					$tmp = $haystack;
					unset($tmp[$key]);
					$haystack = array();
					foreach($tmp as $key => $value) {
						$haystack[$key] = $value;
					}
					return true;
				}
			}
		}
		return false;
	}
	
	$MainArray = array( 
		"1" => array("1.1", "1.2", "1.2"), 
		"2" => array("2.1", "2.2", "2.3"), 
		"3" => array("3.1", "3.2", "3.3") 
	); 	
	
	recursiveUnset("2.2",$MainArray);
	
	print_r($MainArray);
?>