cURL ignores options - php

Question

The following cURL configuration works fine on my local machine using cURL 7.30.0:
$curl = curl_init();
curl_setopt_array($curl, array(
// Just showing the noteworthy options here.
CURLOPT_HTTPHEADER => array("Content-Type: application/x-www-form-urlencoded")
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_0,
CURLOPT_COOKIE => "foo=bar",
));
$response = curl_exec($curl);
curl_close($curl);
Excerpt of the debugging output:
> GET / HTTP/1.0
Host: example.com
Accept: */*
Cookie: foo=bar
Content-Type: application/x-www-form-urlencoded
Now I run the same code on a shared hosting environment with cURL 7.19.7 and get:
> GET / HTTP/1.1
Host: example.com
Accept: */*
Content-Type: application/x-www-form-urlencoded
Basically cURL is working 99% fine, but ignores the forced HTTP version and cookie string. Is the hosting company running a configuration that blocks these features? Is the cURL version they are running too old? What's going on here?

Answer 1

I found it. curl_setopt_array quits processing options as soon as one option fails, I didn't know that. I should've checked the return value to make sure all was well.
In my case the culprit was option CURLOPT_FOLLOWLOCATION. It probably failed because the hosting provider is using safe mode, which disables the follow 301/302 feature.
$curl = curl_init();
$check = curl_setopt_array($curl, $options);
if(!$check)
die("Ye be warned: one of your options did not make it.");
$response = curl_exec($curl);
curl_close($curl);