Question

我有一个脚本循环从数据库表收集的一堆数据。我已经在StackOverflow上阅读了关于合并重复数组键的其他类似帖子，但它们似乎都不适用于我。使用下面的代码，我将所有已编译的数据构建到一个数组中：

$sql = 'SELECT * FROM '.$qstTable.' WHERE '.$type.'_qst_id = '.$answer['answer_qst'];
$result = $db->sql_query($sql);
$q = $db->sql_fetchrow($result);
$db->sql_freeresult($result);

$sql = 'SELECT * FROM '.$catTable.' WHERE '.$type.'_cat_clean = "'.$q[$type.'_qst_cat'].'"';
$result = $db->sql_query($sql);
$cat = $db->sql_fetchrow($result);
$db->sql_freeresult($result);

$daField = $cat[$type.'_cat_name'];

if(count($allQsts)){
    if(array_key_exists($daField, $allQsts)){
        $daData = array(
            'question' => array(
                'id' => $q[$type.'_qst_id'],
                'qst' => $q[$type.'_qst_qst'],
            ),
            'answer' => array(
                'id' => $answer['answer_id'],
                'type' => $answer['answer_input'],
                'content' => $answer['answer_content'],
                'q_type' => $type,
            )
        );
        array_push($allQsts[$daField], $daData);
    }else{
        $allQsts[$cat[$type.'_cat_name']][] = array(
            'question' => array(
                'id' => $q[$type.'_qst_id'],
                'qst' => $q[$type.'_qst_qst'],
            ),
            'answer' => array(
                'id' => $answer['answer_id'],
                'type' => $answer['answer_input'],
                'content' => $answer['answer_content'],
                'q_type' => $type,
            )
        );
    }
}else{
    $allQsts[$cat[$type.'_cat_name']][] = array(
        'question' => array(
            'id' => $q[$type.'_qst_id'],
            'qst' => $q[$type.'_qst_qst'],
        ),
        'answer' => array(
            'id' => $answer['answer_id'],
            'type' => $answer['answer_input'],
            'content' => $answer['answer_content'],
            'q_type' => $type,
        )
    );
}

这就是我的阵列在处理完毕后的结果：

但是，我想要做的是组合已经存在的数组中的节点，如下所示：

如何修改上述代码才能执行此操作？

编辑 - 更新以包含我尝试压缩数组的一些代码：在创建完整的$allQsts数组之后，我通过它循环并测试输出，但每个条目都被复制了更多。

$sortedIt = array();
foreach($allQsts as $m => $n){
    if(!isset($sortedIt[$m])){
        $sortedIt[$m] = array();
    }
    $sortedIt[$m] = $n;
}

我也一直在玩array_merge_recursive，但还没有到达任何地方。

Answer 1

假设这是在一个循环中运行并且$allQsts每次指向同一个数组，您可以大大简化代码：

$daField = $cat[$type.'_cat_name'];
$daData = array(
    'question' => array(
        'id' => $q[$type.'_qst_id'],
        'qst' => $q[$type.'_qst_qst'],
    ),
    'answer' => array(
        'id' => $answer['answer_id'],
        'type' => $answer['answer_input'],
        'content' => $answer['answer_content'],
        'q_type' => $type,
    )
);

if (array_key_exists($daField, $allQsts)) {
    $allQsts[$daField][] = $daData;
} else {
    $allQsts[$daField] = array($daData);
}

这本身应足以获得所需的数据结构。

合并多维数组中的重复键

1 个答案: