Online PHP editor | refs for YnA1g

<?php $data = [ 0 => [ 'SMITH1', 'SMITH2', 'SMITH3', 'SMITH4', ], 1 =>[ 'JOHN1', 'JOHN2', 'JOHN3', 'JOHN4', ] ]; $newArr = []; foreach ($data[0] as $k=>$v){ $newArr[] = [ 'fname' => $v, 'lname' => $data[1][$k] ]; unset($data[0][$k]); unset($data[1][$k]); } array_multisort( array_column($newArr, 'fname'), SORT_ASC, array_column($newArr, 'lname'), SORT_ASC, $newArr ); print_r($newArr);