二维数组排序这个要怎么做？

Question

Array
(
    [0] => Array
        (
            [userid] => 123707
            [username] => qycntest
            [realname] => 企业开发
            [sex] => 3
            [departname] => 
        )    [1] => Array
        (
            [userid] => 123725
            [username] => devtest-23
            [realname] => nn
            [sex] => 1
            [departname] => 17c
            [creator] => 1
        )    [2] => Array
        (
            [userid] => 123726
            [username] => devtest-24
            [realname] => oo
            [sex] => 1
            [departname] => 测试部
            [isManager] => 1
        )    [3] => Array
        (
            [userid] => 123728
            [username] => devtest-26
            [realname] => qq
            [sex] => 1
            [departname] => 测试部
            [isManager] => 1
        )    [4] => Array
        (
            [userid] => 123732
            [username] => devtest-30
            [realname] => uu
            [sex] => 1
            [departname] => 测试部
        ))
我要把有isCreator的项的排在最前面，其次是isManager=1排在后面，最后就是普通用户，请教下大家！ 谢谢

Answer 1

foreach($arr as $ietm) {
  $r1[] = isset($item['isCreator']) ? 1 : 0;
  $r1[] = isset($item['isManager']) ? $item['isManager'] : 0;
}
array_multisort($r1, SORT_DESC, $r2, SORT_DESC, $arr);