php curl post

post("http://51yidao.com/t.php","do=dasdfasdf&ad=asdfasdfasdfasdf") ;

function post($url,$postData) {

$c = curl_init();
curl_setopt($c, CURLOPT_POST, true); 
curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
//curl_setopt($c, CURLOPT_HEADER, 0); 
curl_setopt($c, CURLOPT_URL,$url); 
curl_setopt($c, CURLOPT_POSTFIELDS, $postData); 
$result = curl_exec($c); 
curl_close($c);
return $result;

}