使用 PHP 将简单数组转换为新的数据结构

如何解决使用 PHP 将简单数组转换为新的数据结构

我在 PHP 中有以下数组：

{
    "roles_id": "1","assessments_id": "1","question_id_1": "1","radio_id_1": "1","question_id_2": "2","radio_id_2": "5","question_id_3": "3","radio_id_3": "9"
}

我想用这些数据创建一个数据结构，就像下面的例子一样：

[
    {
        "user_roles_id": "1","hidden_courses_assessments_id": "1","hidden_question_id_1": "1","question_id_2": "2"
    },{
        "user_roles_id": "1","radio_id_2": "2","question_id_2": "5"
    },"radio_id_3": "3","question_id_3": "9"
    }
]

这两个元素总是相同的，但其他元素在每两个元素之后分开。

我该怎么做？

解决方法

因此，从数组中提取两个元素，并将数组的其余部分拆分为大小为 2 的块：

$s = '{"roles_id":"1","assessments_id":"1","question_id_1":"1","radio_id_1":"1","question_id_2":"2","radio_id_2":"5","question_id_3":"3","radio_id_3":"9"}';

$a = json_decode($s,true);
$baseData = [
    "user_roles_id" => array_shift($a),"hidden_courses_assessments_id" => array_shift($a),// I don't know what's this values so I just put it here
    "hidden_question_id_1" => "1",];
$result = [];
    
$key = 1;
foreach (array_chunk($a,2) as $chunk) {
    $result[] = array_merge($baseData,["radio_id_$key" => $chunk[0],"question_id_$key" => $chunk[1]]);
    
    ++$key;
}
print_r($result);  // apply `json_encode` if needed

小提琴here。