Online PHP editor | refs for CSJjH

<?php function array_greedy_diff($x, $y) { $output = $x; for($i = $j = 0; $i < count($x) && j < count($y); ) { if ($x[i] == $y[j]) { unset($output[i]); $x++; } $j++; } return $output; } $a = array(1,2,3,1,2,3); $b = array(1,2,3); var_dump(array_greedy_diff($a, $b));