Online PHP editor | output for NKP57

<?php $allowedKeys = array('foo','baz') $get = array('foo' => 'bar', 'baz' => 'bat'); $post = array('foo' => 'bar', 'baz' => 'bat'); if ((array_keys($get) === $allowedKeys) && (array_keys($post) === $allowedKeys) ) { echo "PASS\n"; } $get['notallowed'] = 'naughty'; if ((array_keys($get) === $allowedKeys) && (array_keys($post) === $allowedKeys) ) { echo "FAIL\n"; } else { echo "PASS\n"; } unset($get['notallowed']); $post['notallowed'] = 'naughty'; if ((array_keys($get) === $allowedKeys) && (array_keys($post) === $allowedKeys) ) { echo "FAIL\n"; } else { echo "PASS\n"; }