php二維數組排序代碼

代碼如下	複製代碼
<?php   $ar = array(     0 => array('a'=>5, 'b'=>3, 'c'=>3),     1 => array('a'=>5, 'b'=>2, 'c'=>1),     2 => array('a'=>1, 'b'=>1, 'c'=>2) ); $a = array(); $b = array();     foreach($ar as $k=>$v) {   $a[$k] = $v['a'];   //$b[$k] = $v['b'];   //$c[$k] = $v['c']; }       array_multisort($a, SORT_ASC, $ar); //array_multisort($a, SORT_DESC, $b, SORT_ASC, $ar);   print_r($ar);