- array_diff_assoc: documentation ( source)
- var_dump: documentation ( source)
<?php
$arr1 = array('foo' => array('bar11',
'bar12'));
$arr2 = array('foo' => array('bar21',
'bar12'),
'foo2' => 'bar2b',
'foo3' => array('qwerty'));
var_dump(array_diff_assoc($arr1, $arr2));