php - 在 foreach 循环中使用 PHP 解析数组值

Question

我想用 PHP 的 foreach 循环解析一个数组，以获取“ques”数组内的对象名称和值。我想要

[
 {
 "ques": [
{
    "name": "comment",
    "value": "comment me for the reason",
    "sur_id": "1",
    "user_id": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="18797c757176587f75797174367b7775" rel="noreferrer noopener nofollow">[email protected]</a>",
    "pagename": "question_response"
},
{
    "name": "check-box[]",
    "value": "1"
},
{
    "name": "radio",
    "value": "radio 2"
},
{
    "name": "yes",
    "value": "no"
}

]
"ques":[
{
    "name": "date",
    "value": "2015-10-23"
    "user_id": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="2b4a4f4642451a6b4c464a424705484446" rel="noreferrer noopener nofollow">[email protected]</a>",  
},
{
    "name": "select-deopdown",
    "value": ""
},
{
    "name": "true",
    "value": "false"
},
{
    "name": "number",
    "value": "55"
 }
 ]
}
]

我想将名称、值和 user_id 从“ques”数组中分离出来:

while ($fetch = mysql_fetch_array($query1)) {
$content = $fetch['CONTENT_VALUES'];
// print_r($content);
$content_value= mb_convert_encoding($content ,"UTF-8");
$datas = json_decode($content, true);
 foreach($datas->ques as $values)
 {
     echo $values->value . "\n";
      print_r($values);
 }
 $test[] = array('ques' =>  $datas ,'answer'=>$values);
}

Answer 1

如果您想为每个值创建三个不同的数组，请创建三个空白数组，然后将相应的值存储到 foreach 中。下面给你一个常见的例子

$name = array(); 
$values= array(); 
$users = array();   
foreach($datas->ques as $values) {
    $name[] = $values->name;   
    $values[] = $values->value; 
    $users[] = !empty($values->user_id) ? $values->user_id : '';
} 

您还可以根据需要进行修改。

谢谢。