How to parse an https URL that redirects to another URL

Using CURL:

$url = 'https://graph.facebook.com/4/picture?width=378&height=378';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); // follow the redirects
curl_setopt($ch, CURLOPT_HEADER, false); // no needs to pass the headers to the data stream
curl_setopt($ch, CURLOPT_NOBODY, true); // get the resource without a body
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // accept any server certificate
curl_exec($ch);

// get the last used URL
$lastUrl = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);

curl_close($ch);

echo $lastUrl;