使用多维数组获取多个选择

Question

我想从两个多维数组中选择选项 这是两个数组

我正在使用2 for循环，但是当我选择了超过1个选项时，它无效。

Array
(
    [0] => stdClass Object
        (
            [id] => 21
            [name] => mentor_add
        )

    [1] => stdClass Object
        (
            [id] => 1
            [name] => users_add
        )

    [2] => stdClass Object
        (
            [id] => 3
            [name] => users_delete
        )

    [3] => stdClass Object
        (
            [id] => 2
            [name] => users_edit
        )

    [4] => stdClass Object
        (
            [id] => 4
            [name] => users_view
        )

)
Array
(
    [0] => stdClass Object
        (
            [perm_id] => 1
            [user_id] => 1
        )

    [1] => stdClass Object
        (
            [perm_id] => 21
            [user_id] => 1
        )

)

我正在为render html编写这段代码：

$html .= '<select name = "perms[]" class="chosen-multiple-select" multiple="multiple" style="width:510px">';
            foreach ($rec as $v) {
                foreach ($sql2 as $sv) {
                    if ($sv->perm_id == $v->id) {
                        $selected = ' selected="selected"';
                    } else {
                        $selected = '';
                    }
                    $html .= '<option ' . $selected . ' value=' . $v->id . '>' . $v->name . '</option>';
                }
            }
            $html .= '</select>';