To make cURL follow a redirect, use:
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
Erm… I don’t think you’re actually executing the curl… Try:
curl_exec($ch);
…after setting the options, and before the curl_getinfo()
call.
EDIT: If you just want to find out where a page redirects to, I’d use the advice here, and just use Curl to grab the headers and extract the Location: header from them:
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
if (preg_match('~Location: (.*)~i', $result, $match)) {
$location = trim($match[1]);
}