一个数组排序的有关问题

array(22) {

  [0]=>

  array(6) {

    ["CheckID"]=>

    string(16) "1001"

    ["PicMemo"]=>

    string(3) "102"

  }

  [1]=>

  array(6) {

    ["CheckID"]=>

    string(16) "1005"

    ["PicMemo"]=>

    string(3) "15"

  }

  [2]=>

  array(6) {

    ["CheckID"]=>

    string(16) "1002"

    ["PicMemo"]=>

    string(3) "102"

  }

  [3]=>

  array(6) {

    ["CheckID"]=>

    string(16) "1003"

    ["PicMemo"]=>

    string(3) "171"

  }

  [4]=>

  array(6) {

    ["CheckID"]=>

    string(16) "1004"

    ["PicMemo"]=>

    string(3) "102"

  }

  [5]=>

  array(6) {

    ["CheckID"]=>

    string(16) "1005"

    ["PicMemo"]=>

    string(3) "171"

  }

  ...

 }