<?php $requiredAttibutes = array('email', 'id', 'first_name', 'last_name'); $vals = array('email' => 1, 'id' => 2, 'first_name' => 3, 'last_name' => 4); var_dump(array_diff_key(array_flip($requiredAttibutes), $vals));
You have javascript disabled. You will not be able to edit any code.