排序X& Y的大小

时间:2015-03-23 03:21:56

标签: php sorting multidimensional-array asort

我试图弄清楚如何对数组进行排序,该数组具有子阵列,每个子阵列都有一个X& Y坐标。我需要先将最大的大小排序到最小的,例如:

$sizes = array(
    'a' => array(
        'x' => 10,
        'y' => 140,
    ),
    'b' => array(
        'x' => 20,
        'y' => 24,
    ),
    'c' => array(
        'x' => 20,
        'y' => 40,
    ),
    'd' => array(
        'x' => 50,
        'y' => 50,
    ),
    'e' => array(
        'x' => 10,
        'y' => 9,
    ),
);

应该如此自然地采取行动:

$sizes = array(
    'e' => array(
        'x' => 10,
        'y' => 9,
    ),
    'b' => array(
        'x' => 20,
        'y' => 24,
    ),
    'c' => array(
        'x' => 20,
        'y' => 40,
    ),
    'd' => array(
        'x' => 50,
        'y' => 50,
    ),
    'a' => array(
        'x' => 10,
        'y' => 140,
    ),
);

我在使用asort之前按值排序,但是我不确定如何在多维数组上对这样的索引关联进行排序和维护。任何帮助都会很棒!

1 个答案:

答案 0 :(得分:0)

对我来说很棒:

    function sort_multi_array_2_col($arrInbound
        , $strColumn1
        , $strColumn1Sort = "ASC"
        , $strColumn2
        , $strColumn2Sort = "ASC") {

        reset($arrInbound);

        foreach ($arrInbound as $key => $row) {
            $columnToSort1[$key] = $row[$strColumn1];
            $columnToSort2[$key] = $row[$strColumn2];
       }

        array_multisort($columnToSort1
            , get_sort_flag($strColumn1Sort)
            , $columnToSort2
            , get_sort_flag($strColumn2Sort)
            , $arrInbound);

        return $arrInbound;
  }

    function get_sort_flag($strSort) {

    if($strSort == "ASC"){
          return SORT_ASC;
      } else {
          return SORT_DESC;
      }

  }