Is there a faster way to return values of an array that are not not in another array

Is there a faster way to do this? It is pretty slow when you are checking lots of data

$dataArray = array(0=>4, 1=>5, 2=>6, 3=>7, 4=>8);
$checkArray = array(0=>4, 1=>5, 2=>6);

foreach($dataArray as $data){
	if(!in_array($data, $checkArray)){
		$returnData[] = $data;
	}
}

print_r($returnData);

PHP:

 

yes theirs a function already for this theirfore no need to reinvent the wheel - array_diff() -> http://php.net/manual/en/function.array-diff.php

 

thanks man!