<?php $requiredAttibutes = array('email', 'id', 'first_name', 'last_name', 'whereru?'); $vals = array('email' => 1, 'id' => 2, 'first_name' => 3, 'last_name' => 4, 'lolmore' => 5); var_dump(array_diff_key(array_flip($requiredAttibutes), $vals));
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