$a = $b = array();
foreach($result[‘info‘] as $val){
$a[] = $val[‘release_time‘]; //a列
$b[] = $val[‘tid‘]; //c列
}
array_multisort($a,SORT_DESC , $b, SORT_DESC, $result[‘info‘]);
原文：http://www.cnblogs.com/afei-happy/p/4283487.html