stuck in php cURL yahoo login code: plz help here

i am new to curl .and i m trying to create create a script to log into yahoo and click the confermation link in emails.
but i am stuck witht he login process only
i made the code below . but still i cant make it work. the problem is yahoo is implementing a captcha challange for this kind of automated headers. do you have any idea ho to make it work again without alerting the captcha challange ?

the header i caught through the livehttp header is as follows:

Content-Length: 347


$authUrl    = "https: //login.  yahoo  .   com/config/login?";
$userAgent  = "Mozilla/5.0 (Windows NT 5.1; rv:2.0b11) Gecko/20100101 Firefox/4.0b11";
$referer    = "http  :  //  my  .  yahoo  .  com";
$login      = "userid";
$password   = "password";
$numPostData = 22;
$cookieFileJar  = "ycookie.txt";
$cookie = 0;
$postData = ".tries=1&.src=ym&.md5=&.hash=&.js=&.last=&promo=&.intl=in&.bypass=&.partner=&.u=4ls6cr96lbs8e&.v=0&.challenge=W9w31pCrbdazCcY4mH41fVsyxwd8&.yplus=&.emailCode=&pkg=&stepid=&.ev=&hasMsgr=0&.chkP=Y&$login&passwd=$password&.persistent=y&.save=&passwd_raw=" ;

$ch = curl_init();
curl_setopt($ch, CURLOPT_USERAGENT, $userAgent);

// Set the referrer
curl_setopt($ch, CURLOPT_REFERER, $referer);

// Set the authentication url
curl_setopt($ch, CURLOPT_URL, $authUrl);

// Set number of post fields
curl_setopt($ch, CURLOPT_POST, $numPostData);

//Set post data in key=value pair such as login=yourusername
curl_setopt($ch, CURLOPT_POSTFIELDS, $numPostData);

//Set filename for storing cookie information
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookieFileJar);

//Set ffilename for checking the stored cookie information
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookieFileJar);

//Set option for cookie
curl_setopt($ch, CURLOPT_COOKIE, $cookie);

//set this to output the result as string and not output directly ot browser

//set this value to 1 if you want to redirect to the url you provided as service url
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);

//Set this option if you do not want to verify ssl
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);

//set this option if you do not want to verify peer’s certificate
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);

//now execute the curl
$res = curl_exec($ch);
echo $res;
//check if the username and password is valid
if ((preg_match("/invalid/i", $res)) || (preg_match("/not yet taken/i", $res))) {
echo “Invalid Login”;
else {
//if CURLOPT_FOLLOWLOCATION is set to 1 then after logging in successfully user is directed to url that is specified as service url
echo “Logged In”;

I’ve never worked with curl, but @ I read:

hi all .. I found a lot of examples to extract yahoo address book, but no one worked ... here is one made from scratch works !!
Looks like it would be a LOT more efficient, reliable, etc. if you simply used the Yahoo! Address Book API like you're supposed to.

I’d look into the API.

Hope this points you in the right direction =]

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