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<?php $array = array(0 =>array('codes'=>array(7,4,5)), 1 =>array('codes'=>array(4,45,1))); array_multisort ($array, SORT_ASC); var_dump($array);
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(1) { ["codes"]=> array(3) { [0]=> int(4) [1]=> int(45) [2]=> int(1) } } [1]=> array(1) { ["codes"]=> array(3) { [0]=> int(7) [1]=> int(4) [2]=> int(5) } } }