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<?php $a = array('franz' => array('x', 'deleon'), 'cheryl' => array('x', 'chua')); sort($a); var_dump($a);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> array(2) { [0]=> string(1) "x" [1]=> string(4) "chua" } [1]=> array(2) { [0]=> string(1) "x" [1]=> string(6) "deleon" } }