PHP Post with Header and XML Content - php

Question

I want to subscribe a YouTube Channel through the GData API via PHP.
How can i do this post in PHP?
I tried it like this but the page keeps loading forever:
<?php
session_start();
include 'gdata.php' // For $DEVKEY
function post_xml($url, $xml) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, Array(
"Content-Type: application/atom+xml",
"Content-Length: 1024",
"Authorization: Bearer $token",
"GData-Version: 2",
"X-GData-Key: key=$DEVKEY"));
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, array('data' => $xml );
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
$result = curl_exec($ch);
$info = curl_getinfo($ch);
curl_close($ch);
return $result;
}
$token = $_SESSION['token'];
$xml = '<?xml version="1.0" encoding="UTF-8"?>
<entry xmlns="http://www.w3.org/2005/Atom"
xmlns:yt="http://gdata.youtube.com/schemas/2007">
<category scheme="http://gdata.youtube.com/schemas/2007/subscriptiontypes.cat"
term="channel"/>
<yt:username>GoogleDevelopers</yt:username>
</entry>';
$url = 'https://gdata.youtube.com/feeds/api/users/default/subscriptions';
echo post_xml($url, $xml);
?>
In HttpRequester i already managed it to do a HTTP Post Request and it worked. I think the problem is the content of the Request. How do i properly give the text which is in "Content" (look at the screenshot) via PHP (cURL)?
Thanks :)

Answer 1

Just put the $xml as POSTFIELDS and it should work:
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
And add the correct content-length:
"Content-Length: ".strlen($xml),
When you're planning to do more, like PUT-requests with data and just lots of REST-requests, I would suggest to use some kind of package like Httpful. Curl has it's pitfalls...

Answer 2

You can look at the code below, hope it will help
$headers = array(
"Content-type: text/xml",
"Content-length: " . strlen($xml),
"Connection: close",
);
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$res = curl_exec($ch);
curl_close($ch);
return json_decode($res);