Is there a way to find out what a url redirects to in PHP?

[JMusic]

Every day on my blog, I have a list of about 30 other blogs that I link to. Lately, more and more of then have been using feedburner, which means that the links to their posts show up like this:

http://feeds.feedburner.com/~r/Jorda.../~3/144521539/

Is there a function in php that will find out what that URL redirects to, and return the actual URL of the post instead of the feedburner URL?

[php_daemon]

You can use fsockopen to send a request and read the response, which will give you code 3xx and the link to the redirected page.

If you're using php5, get_headers makes things a little bit easier:

$headers=get_headers($url, 1);
 
if(isset($headers['Location'])){
    $location=$headers['Location'];
}else{
    $location=$url;
}

[JMusic]

I'm still using php 4... is there an equivalent to "get_headers" in php 4?

[php_daemon]

Nope. Your best call is using fsockopen and parsing headers manually. Check out the page on php manual, there are examples.

Luckily, though, a quick search on phpclasses.org gave me this class http://www.phpclasses.org/browse/package/917.html

Give it a go.