Online PHP editor | refs for r0XlR

<?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);