PHP cURL: Get target of redirect, without following it

The curl_getinfo function returns a lot of metadata about the result of an HTTP request. However, for some reason it doesn't include the bit of information I want at the moment, which is the target URL if the request returns an HTTP redirection code.

I'm not using CURLOPT_FOLLOWLOCATION because I want to handle specific redirect codes as special cases.

If cURL can follow redirects, why can't it tell me what they redirect to when it isn't following them?

Of course, I could set the CURLOPT_HEADER flag and pick out the Location header. But is there a more efficient way?