根据二维数组中的键名称声明各个变量

Question

更新：抱歉，我想通了..我只取出$value[0]，所以当然它只有一个结果。需要更多睡眠。多谢。我仍然愿意寻求更干净的方式来分割数组的建议。

我有一个具有以下结构的数组

$tdata

：

Array
(
    [] => Array
    (
        [0] => Array
            (
                [firstName] => test
                [lastName] => test
                [userName] => [email protected]
                [password] => test
                [course] => test
                [role] => test
            )

        [1] => Array
            (
                [firstName] => test
                [lastName] => test
                [userName] => [email protected]
                [password] => test
                [course] => test
                [role] => test
            )

    )

    [delete] => Array
    (
        [0] => Array
            (
                [firstName] => test
                [lastName] => test
                [userName] => [email protected]
                [password] => test
                [course] => test
                [role] => test
            )

    )

    [update] => Array
    (
        [0] => Array
            (
                [firstName] => test
                [lastName] => test
                [userName] => [email protected]
                [password] => test
                [course] => test
                [role] => test
            )

    )

    [outrole] => Array
    (
        [0] => Array
            (
                [firstName] => test
                [lastName] => test
                [userName] => [email protected]
                [password] => test
                [course] => test
                [role] => test
            )

    )

)

我正在尝试将其分成更小的数组。像这样：

foreach ($tdata as $key => $value) {

    if ($key == '') {
       $create[] = $value[0];
    }elseif ($key == 'outrole') {
       $outrole[]  = $value[0];
    }elseif ($key == 'delete') {
       $delete[] = $value[0];
    }elseif ($key == 'update') {
       $update[] = $value[0];
    }else{
     $noaction[] = $value[0];
    }

}

我认为，这样数组就会不断覆盖自身。

print_r($create)

或任何其他数组始终仅返回 1 个结果。可以启发我并告诉我我做错了什么吗？

如果有更好的方法，我也很想听听。

Answer 1

如果这些键始终存在，那么你实际上不需要循环：

$create = $original['create'];
$outrole = $original['outrole'];

您可以添加检查是否已设置：

$create = isset($original['create']) ? $original['create'] : array();

如果不存在，这会将其设置为空白数组。

Answer 2

你的数组是嵌套的。要制作更小的数组，您应该在内部值内进行迭代：

foreach ($tdata as $key => $value) {
    if ($key == '') {
       foreach($value as $subValue) {
           $create[] = $subValue;
       }
    }elseif ($key == 'outrole') {
       foreach($value as $subValue) {
           $outrole[] = $subValue;
       }
    } // ... and so on...        
}