assertchris · August 29, 2015 14:08
diff --git a/array_difference.php b/array_difference.php
 <?php


 function array_difference(array $first, array $second) {
  return array_merge(
    array_diff($first, $second),
    array_diff($second, $first)
  );  
 }
	<?php


	function array_difference(array $first, array $second) {
	return array_merge(
	array_diff($first, $second),
	array_diff($second, $first)
	);
	}