Send custom HTTP headers AND get response header - curl - php

Question

I'm trying to curl (in PHP) a URL and send a custom header in the request. But then I also need to be able to view the response header that is returned. I'm querying an external API that I don't control.
I've tried using both the CURLOPT_HTTPHEADER and CURLOPT_HEADER options but they don't seem to work well together. CURLOPT_HEADER seems to overwrite the request headers so I can't authenticate my request BUT I then can view the headers in the response. If I take CURLOPT_HEADER out, I can successfully authenticate, but can't view headers.
PHP Code:
$url = "http://url-goes-here";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT ,0);
curl_setopt($ch, CURLOPT_TIMEOUT, 60);
$headers = array("X-Auth-Token: $token");
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_HEADER, 1);
$out = curl_exec($ch);
curl_close($ch);

Answer 1

As per the documentation, it has to be
curl_setopt($ch, CURLOPT_HEADER, 1); // or TRUE
instead of
curl_setopt($ch, CURLOPT_HEADER, $headers);
EDIT: I must say I can't replicate the issue. I've created two scripts: a.php (using your content, with $url changed to 'http://localhost/b.php') and b.php (queried by a.php) which contains this:
<?php
foreach (getallheaders() as $name => $value) {
echo "$name: $value\n";
}
So when I run php a.php, I get this:
HTTP/1.1 200 OK
Date: Tue, 16 Feb 2016 02:42:45 GMT
Server: Apache/2.4.10 (Fedora) PHP/5.6.15
X-Powered-By: PHP/5.6.15
Content-Length: 50
Content-Type: text/html; charset=UTF-8
Host: localhost
Accept: */*
X-Auth-Token: xxx
Which means I'm 1) getting the response headers successfully, and 2) receiving them successfully as well from a.php. I'd suggest you trying something similar and see if your web server (or your application) is playing tricks with you.