curl_setopt($ch, CURLOPT_URL, 'http://www.abc.com/login.aspx'); 
curl_setopt ($ch, CURLOPT_POST, true); 
curl_setopt ($ch, CURLOPT_POSTFIELDS, '$post');
curl_setopt ($ch, CURLOPT_COOKIEJAR, 'dosyam.txt');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'dosyam.txt');
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

...
.....
.......

$icerik = curl_exec ($ch);