PHP - REST API - http 标头 - 错误处理 [英] PHP - REST API - http headers - error handling

问题描述

我试图将 HTTP 标头与 XML 一起返回，说明进程是否成功.

I am trying to return a HTTP header together with XML stating whether a process has been successful or not.

在开发我的 API 时，这一切似乎都运行良好，我正在从同一服务器对 API 进行测试调用，并将相关的标头状态代码与 XML 一起获取.但是，当我再次测试但从其他服务器调用 API 时遇到了问题.

This all appeared to be working fine whilst developing my API, I was making test calls to the API from the same server and getting the relevant header status code together with the XML. However, when I test this again but calling the API from other server and am encountering a problem.

如果响应是 200，那么我得到响应 XML.如果有错误，我会收到标头状态代码 OK 但没有收到错误 XML.我玩弄了错误消息传递函数，并注意到如果我注释掉 header($status_header); 会发送错误 XML.谁能解释一下为什么会发生这种情况?

If the response is 200 then I get the response XML. If there is an error, I receive the header status code OK but get no error XML. I have played around wit the the error messaging function and noticed that if I comment out header($status_header); the error XML is sent. Can anyone shed some light as to why this might be happening?

    static function errorResponse($status = 400, $body = '')  {  

    $status_message = APIResponse::getStatusCodeMessage($status);
            $status_header = 'HTTP/1.1 ' . $status . ' ' . $status_message;  

    // set the HTTP status  
    header($status_header);   

    if($body == '')  {  
       // create the message if none is passed  
      $body = '';  

      switch($status)  
      {  
          case 401:  
              $body = 'You must be authorized to view this page.';  
              break;  
          case 404:  
              $body = 'The requested URL ' . $_SERVER['REQUEST_URI'] . ' was not found.';  
              break;  
          case 500:  
              $body = 'The server encountered an error processing your request.';  
              break;  
          case 501:  
              $body = 'The requested method is not implemented.';  
              break;  
      }  

    } 

      $response_xml = '<?xml version="1.0" encoding="utf-8"?> 
          <error>  
              <date>' . date("D, d M Y H:i:s", time()) . '</date>
              <status>' . $status . ' - ' . $status_message . '</status> 
              <message><![CDATA[' . $body . ']]></message> 
          </error>';  

      return $response_xml;  
      exit;  

}  

推荐答案

我现在已经对此进行了排序，这是我的包含 CURL 函数的类的错误，与此类无关.

I've now sorted this, it was an error with my class containing CURL functions, nothing to do with this class.

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