[php-list] Yahoo Login with php curl

[cosminx2003]

Hi, i want to login on yahoo with php cURL, i made a script but i
can't make it work fine (it gives me blank page).
Please tell me how can i fix it.
Thanks

<?php

$username = "user";
$password = "pass";
$ch = curl_init();
 
curl_setopt ($ch, CURLOPT_URL, 'http://login.yahoo.com/config/login?');
curl_setopt ($ch, CURLOPT_POST, 1);
curl_setopt ($ch, CURLOPT_POSTFIELDS, 
"login=$username&passwd=$password&.src=&.tries=5&.bypass=&.partner=&.md5=&.hash=&.intl=us&.tries=1&.challenge=ydKtXwwZarNeRMeAufKa56.oJqaO&.u=dmvmk8p231bpr&.yplus=&.emailCode=&pkg=&stepid=&.ev=&hasMsgr=0&.v=0&.chkP=N&.last=&.done=");
 
curl_setopt ($ch, CURLOPT_COOKIEJAR, "cookies.txt");
curl_setopt ($ch, CURLOPT_COOKIEFILE, "cookies.txt");
 
curl_setopt ($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Macintosh; U; PPC
Mac OS X;en) AppleWebKit/419.2.1 (KHTML, like Gecko) Safari/419.3');
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);

$result=curl_exec ($ch);
curl_close ($ch); 
echo $result;