Finding the URL of a redirected page

[okaybmd]

I'm writing a program that will take a series of URLs and, one at a time, examine the source code of the target pages.

So far so good. But how can I get the URL or the target page??

Here is the code I'm using :

<?
$fp = fopen("http://www.example.com/redirect123.php", "r");

$tmp_site = "";
while (!feof($fp))
{
    $tmp_site .= fgets($fp, 128);
};
fclose($fp);

?>

[thorpe]

Sorry? Your question is unclear. You say you have a series of URL's yet you want to find the URL? What?