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<?php $mainArray = array( 0 =>array( "key1" => array(7,4,5), 'key2' => array('cc','aa'), "key3" => array(71,4,54), 'key4' => array('cec','aea'), "key5" => array(8,47,15), 'key6' => array('cce','eaa'), ) ); foreach($mainArray as $secondIndex=>$secondArray){ foreach($secondArray as $index=>$array){ array_multisort($array); $secondArray[$index] = $array; } $mainArray[$secondIndex] = $secondArray; } var_dump($mainArray);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(1) { [0]=> array(6) { ["key1"]=> array(3) { [0]=> int(4) [1]=> int(5) [2]=> int(7) } ["key2"]=> array(2) { [0]=> string(2) "aa" [1]=> string(2) "cc" } ["key3"]=> array(3) { [0]=> int(4) [1]=> int(54) [2]=> int(71) } ["key4"]=> array(2) { [0]=> string(3) "aea" [1]=> string(3) "cec" } ["key5"]=> array(3) { [0]=> int(8) [1]=> int(15) [2]=> int(47) } ["key6"]=> array(2) { [0]=> string(3) "cce" [1]=> string(3) "eaa" } } }