Php 为什么在添加标题后无法获取POSTFIELDS？

这是客户端中的代码：

//Create XML Object
$newsXML = new SimpleXMLElement("<news></news>");
$newsXML->addAttribute('newsPagePrefix', 'value goes here');
$newsIntro = $newsXML->addChild('content',"test data");
$newsIntro->addAttribute('type', 'latest');

// URL of api
$url = 'http://localhost:81/demophp/api2.php';

// init CURL
$ch = curl_init($url);
$headers = array(
    'Content-type: application/xml',
    'Authorization: 123456',
);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
// exist return value
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
// method:  POST
curl_setopt($ch, CURLOPT_POST, 1); 
// parameters
curl_setopt($ch, CURLOPT_POSTFIELDS, ["xml"=>$newsXML->asXML()]);  
$result = curl_exec($ch);
curl_close($ch);

如果我删除头，它可以得到xml。 但如果我把头加到卷曲上

出现无法获取xml的错误：

---

为什么在添加标题后无法获取POSTFIELDS？

试试这个curl脚本。它可能对你有用

   $newsXML = new SimpleXMLElement("<news></news>");
    $newsXML->addAttribute('newsPagePrefix', 'value goes here');
    $newsIntro = $newsXML->addChild('content',"test data");
    $newsIntro->addAttribute('type', 'latest');
    // URL of api
    $url = 'http://localhost:81/demophp/api2.php';
    $input_xml = $newsXML->asXML();
    // init CURL
    $ch = curl_init($url);
    $headers = array(
         'Content-type: application/xml',
        'Authorization: 123456'

    );
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    // exist return value
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
    curl_setopt($ch, CURLOPT_POST, 1);
    // method:  POST
    curl_setopt($ch, CURLOPT_POSTFIELDS, $input_xml); 
    // parameters
    $result = curl_exec($ch);
    print_r($result);
    curl_close($ch);

---

因为您将内容类型设置为application/xml，然后插入postfields而不是xml body，如何解决此问题？谢谢。我们不设置内容类型。或者将xml作为请求的原始正文。如果[或者将xml作为请求的原始正文]，在api2.php中，如何获取xml字符串？如果将xml直接放入正文中，则可能需要将“获取”内容归档php://input';

$headers = array(
        'Content-type: application/xml',
        'Authorization: 123456',
    );
  curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

Authorization: 123456
Notice: Undefined index: xml in D:\demophp\api2.php on line 8

Fatal error: Uncaught Exception: String could not be parsed as XML in

   $newsXML = new SimpleXMLElement("<news></news>");
    $newsXML->addAttribute('newsPagePrefix', 'value goes here');
    $newsIntro = $newsXML->addChild('content',"test data");
    $newsIntro->addAttribute('type', 'latest');
    // URL of api
    $url = 'http://localhost:81/demophp/api2.php';
    $input_xml = $newsXML->asXML();
    // init CURL
    $ch = curl_init($url);
    $headers = array(
         'Content-type: application/xml',
        'Authorization: 123456'

    );
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    // exist return value
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
    curl_setopt($ch, CURLOPT_POST, 1);
    // method:  POST
    curl_setopt($ch, CURLOPT_POSTFIELDS, $input_xml); 
    // parameters
    $result = curl_exec($ch);
    print_r($result);
    curl_close($ch);

 $headers = apache_request_headers();

foreach ($headers as $header => $value) {
    if($header=="Authorization")
    echo "$header: $value";
}

$data = file_get_contents("php://input");
$xmlstr=$data;
$myfile = fopen("log.txt", "w") or die("Unable to open file!");
fwrite($myfile, $xmlstr);
fclose($myfile);
$xml= new SimpleXMLElement($xmlstr);
echo $xml['newsPagePrefix'];
exit;