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<?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));
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Array to string conversion in /in/cWnHd on line 11 Notice: Array to string conversion in /in/cWnHd on line 11 array(0) { }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 5.3.29
array(0) { }