Chequeo url existe en PHP / Curl también para redirects

check_url_exists

function urlExist($url)
{
        $handle   = curl_init($url);
        if (false === $handle) 
                return false;
        
        curl_setopt($handle, CURLOPT_HEADER, true);
        curl_setopt($handle, CURLOPT_FAILONERROR, true);  // this works
        curl_setopt($handle, CURLOPT_HTTPHEADER, Array("User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.15) Gecko/20080623 Firefox/2.0.0.15") ); // request as if Firefox
        curl_setopt($handle, CURLOPT_NOBODY, true);
        curl_setopt($handle, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($handle, CURLOPT_RETURNTRANSFER, false);
        $connectable = curl_exec($handle);
        curl_close($handle);
        return $connectable;
}