<?php
function getir($url, $ref = NULL)
{ 
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_HEADER, 1);
    $x = curl_exec($ch);
    curl_close($ch); 
    return $x;
}
$kaynak = getir('http://adres.com/sayfa.html');
preg_match('~Location: (.*)~', $kaynak, $loc);
echo $loc[1]; // yönlendirilen adres
?>