need help about curl login

[Duwex]

I'm new to using cURL and its hard to find good resources for it. What I'm trying to do is login to a remote site, by having curl do the login form and then send back that it was successful.

The code I have doesn't seem to work and only tries to show the main page of the site

 

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://m.algadon.com/login.php?act=login');
curl_setopt($ch, CURLOPT_USERAGENT,'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/32.0.1700.107 Chrome/32.0.1700.107 Safari/537.36');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, "username=kontol&password=kontol");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIESESSION, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, '$ckfile');  //could be empty, but cause problems on some hosts
curl_setopt($ch, CURLOPT_COOKIEFILE, '$ckfile');  //could be empty, but cause problems on some hosts
$answer = curl_exec($ch);
if (curl_error($ch)) {
    echo curl_error($ch);
}

//another request preserving the session

curl_setopt($ch, CURLOPT_URL, 'http://m.algadon.com/login.php?act=login');
curl_setopt($ch, CURLOPT_POST, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, "");
$answer = curl_exec($ch);
if (curl_error($ch)) {
    echo curl_error($ch);
}

[zamight]

I don't know the host's code. Since the form submits via POST and your only passing two parts of the form when there are three. Including the button which is name="Submit" and value="Login" this could pose a problem from the host if they check for the value of the button.

 

This is just a guess. I don't really use curl to login websites.