Why can't get POSTFIELDS after add header?

Question

This is code in client:

//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);

This is code of api2.php

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

$xmlstr=$_POST["xml"];
$myfile = fopen("log.txt", "w") or die("Unable to open file!");
fwrite($myfile, $xmlstr);
fclose($myfile);

$xml= new SimpleXMLElement($xmlstr);
echo $newsXML['newsPagePrefix'];
exit;

If i remove header, it can get xml. but If i add header to curl

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

It occur error can't get xml:

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

Why can't get POSTFIELDS after add header?

Answer 1

try this curl script . it may work for you.

   $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);

This is code of api2.php

 $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;