php – 如何将一维数组转换为二维数组

我有以下数组,来自一个表单,具有如下多语言数据：

Array
(
    [en_name] => ...........
    [en_description] => ...........
    [gr_name] => ...........
    [gr_description] => ...........
)

如何将此数组转换为二维,如：

Array
(
    [en] => Array
        (
            [name] => ...........
            [description] => ...........
        )

    [gr] => Array
        (
            [name] => ...........
            [description] => ...........
        )
)

解决方法:

使用此代码：

$finalArr = array();
foreach($arr as $key => $val) {
   $tok = explode('_', $key);
   $finalArr[$tok[0]][$tok[1]] = $val;
}