重命名键名codeigniter

Question

数组

 Array
    (
        [1] => stdClass Object
            (
                [id] => 1
                [reg_type_id] => birth
                [mem_tbl_id] => 1
                [reg_date] => 1937-09-18
            )

        [2] => stdClass Object
            (
                [id] => 3
                [reg_type_id] => birth
                [mem_tbl_id] => 2
                [reg_date] => 1945-02-06
            )

        [3] => stdClass Object
            (
                [id] => 4
                [reg_type_id] => birth
                [mem_tbl_id] => 3
                [reg_date] => 1968-04-12
            )
    )

需要将“reg_date”重命名为“do_birth”
我尝试更改密钥，但出现“无法将 stdClass 类型的对象用作数组”错误。

foreach ($birth as $k => $v) {
            $birth[$k] ['do_birth'] = $birth[$k] ['reg_date'];
            unset($birth[$k]['reg_date']);
        }

上面几行代码对我不起作用！

Answer 1

您不能使用以下代码将对象作为数组获取

foreach ($birth as $k => $v) {
            $birth[$k]->do_birth = $birth[$k]->reg_date;
            unset($birth[$k]->reg_date);
        }