arrays - array_multisort not working PHP -

please need help. want sort array ascending order priority time.

heres array

array (     [process] => array         (             [0] => array                 (                     [name] => p1                     [burst_time] => 2                     [priority_time] => 3                 )              [1] => array                 (                     [name] => p2                     [burst_time] => 2                     [priority_time] => 4                 )              [2] => array                 (                     [name] => p3                     [burst_time] => 2                     [priority_time] => 1                 )          )  ) 

i tried code doesn't work me. thank in advanced :)

foreach ($data $key => $row) {     $mid[$key]  = $row; } array_multisort($mid, sort_asc, $data); 

you're using array_multisort don't need sort in multiple dimensions. simple usort enough:

$data = array(     "process" => array(         array(             "name" => p1,             "burst_time" => 2,             "priority_time" => 3         ), array(             "name" => p2,             "burst_time" => 2,             "priority_time" => 4         ), array(             "name" => p3,             "burst_time" => 2,             "priority_time" => 1         )     ) );  usort($data["process"], "sort_by_priority_time");  function sort_by_priority_time($a, $b) {     return $a["priority_time"] - $b["priority_time"]; }