如何解码 JSON 字符串答案

【问题标题】：How to decode a JSON String如何解码 JSON 字符串
【发布时间】：2011-02-02 08:34:52
【问题描述】：

大家！我可以请你帮我解码这个 JSON 代码吗：

$json = '{"inbox":[{"from":"55512351","date":"29\/03\/2010","time":"21:24:10","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."},{"from":"55512351","date":"29\/03\/2010","time":"21:24:12","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."},{"from":"55512351","date":"29\/03\/2010","time":"21:24:13","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."},{"from":"55512351","date":"29\/03\/2010","time":"21:24:13","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."}]}';

我想把上面的结构组织成这样：

注1：

文件夹：收件箱

来自（从）：...

日期（日期）：...

时间（时间）：...

utcOffsetSeconds: ...

收件人（地址）：...

收件人（姓名）：...

状态（deliveryStatus）：...

文本（正文）：...

注2：

...

提前致谢！

【问题讨论】：

标签： php json

【解决方案1】：

您可以使用json_decode 函数来解码您的 JSON 字符串：

$json = '{"inbox":[{"from":"55512351","date":"29\/03\/2010","time":"21:24:10","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."},{"from":"55512351","date":"29\/03\/2010","time":"21:24:12","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."},{"from":"55512351","date":"29\/03\/2010","time":"21:24:13","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."},{"from":"55512351","date":"29\/03\/2010","time":"21:24:13","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."}]}';
$data = json_decode($json);
var_dump($data);

你会得到这样的东西：

object(stdClass)[1]
  public 'inbox' => 
    array
      0 => 
        object(stdClass)[2]
          public 'from' => string '55512351' (length=8)
          public 'date' => string '29/03/2010' (length=10)
          public 'time' => string '21:24:10' (length=8)
          public 'utcOffsetSeconds' => int 3600
          public 'recipients' => 
            array
              0 => 
                object(stdClass)[3]
                  public 'address' => string '55512351' (length=8)
                  public 'name' => string '55512351' (length=8)
                  public 'deliveryStatus' => string 'notRequested' (length=12)
          public 'body' => string 'This is message text.' (length=21)
      1 => 
        object(stdClass)[4]
          public 'from' => string '55512351' (length=8)
          public 'date' => string '29/03/2010' (length=10)
          public 'time' => string '21:24:12' (length=8)
          public 'utcOffsetSeconds' => int 3600
          public 'recipients' => 
            array
              0 => 
                object(stdClass)[5]
                  public 'address' => string '55512351' (length=8)
                  public 'name' => string '55512351' (length=8)
                  public 'deliveryStatus' => string 'notRequested' (length=12)
          public 'body' => string 'This is message text.' (length=21)
      ....
      ....

现在您知道了数据的结构，您可以对其进行迭代；例如，你可以使用这样的东西：

foreach ($data->inbox as $note) {
  echo '<p>';
  echo 'From : ' . htmlspecialchars($note->from) . '<br />';
  echo 'Date : ' . htmlspecialchars($note->date) . '<br />';
  echo 'Body : ' . htmlspecialchars($note->body) . '<br />';
  echo '</p>';
}

你会得到这样的输出：

From : 55512351
Date : 29/03/2010
Body : This is message text.

From : 55512351
Date : 29/03/2010
Body : This is message text.

...
...

【讨论】：

Pascal MARTIN，感谢您的快速反应！但是这个乘法数组的问题。我真的不能对所有这些数组进行操作并制作一个简单的结构，就像我想在上面做的那样，就像单独的注释一样！拜托，我问你能不能展示我应该如何操作所有这些数组？你能用我不知道 foreach() 或什么来展示它吗？谢谢！
@ilnur777：如果您不知道foreach，请阅读文档：php.net/manual/en/control-structures.foreach.php。 for 和 foreach 循环是处理数组时必不可少的工具。
帕斯卡·马丁，你救了我的命和神经！！！非常感谢。我现在真的可以理解如何在 JSON 上操作数组了！
@ilnur777：不要忘记将 Pascal 的答案标记为正确答案 :-)
如果只有一个收件人，$note->recipients[0]->name 之类的应该可以；如果有时不止一个，您可以使用 foreach 循环遍历 $note->recipients

【解决方案2】：

看起来收件人属性是一个数组，试试这个：

$json = '{"inbox":[{"from":"55512351","date":"29\/03\/2010","time":"21:24:10","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."},{"from":"55512351","date":"29\/03\/2010","time":"21:24:12","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."},{"from":"55512351","date":"29\/03\/2010","time":"21:24:13","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."},{"from":"55512351","date":"29\/03\/2010","time":"21:24:13","utcOffsetSeconds":3600,"recipients":[{"address":"55512351","name":"55512351","deliveryStatus":"notRequested"}],"body":"This is message text."}]}';
$data = json_decode($json);
print_r($data);

    foreach ($data->inbox as $note)
    {
      echo '<p>';
      echo 'From : ' . htmlspecialchars($note->from) . '<br />';
      echo 'Date : ' . htmlspecialchars($note->date) . '<br />';
      echo 'Time : ' . htmlspecialchars($note->time) . '<br />';
      echo 'Body : ' . htmlspecialchars($note->body) . '<br />';

        foreach($note->recipients as $recipient)
        {
            echo 'To (address) : ' . htmlspecialchars($recipient->address) . '<br />';
            echo 'To (name)    : ' . htmlspecialchars($recipient->name) . '<br />';
            echo 'Status       : ' . htmlspecialchars($recipient->deliveryStatus) . '<br />';
        }
    }

【讨论】：

【解决方案3】：

enter code here
<?php
$subject = file_get_contents('http://example.com/subject.php');
$subject_arr = json_decode($subject);

$my = $subject_arr->info;

for($i=0;$i<=1000;$i++){
echo $my[$i]->subject_name;
echo "<br>";
}
echo $my[0]->subject_name;

?>
<?php
$subject = file_get_contents('http://example.com/subject.php');
$subject_arr = json_decode($subject);

$my = $subject_arr->info;

for($i=0;$i<=1000;$i++){
echo $my[$i]->subject_name;
echo "<br>";
}
?>

【讨论】：