$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "$url");
curl_setopt($ch, CURLOPT_TIMEOUT, 2);
curl_setopt($ch, CURLOPT_HEADER, 1); //如果设为0，则不使用header
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
$result = curl_exec($ch);
curl_close($ch);

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,'＄url');
curl_setopt($ch,CURLOPT_POST,1);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,TRUE);
$vars =sprintf('from=%d&to=%d&subject=%s&body=%s',$from, $to, urlencode($subject), urlencode($body));
curl_setopt($ch,CURLOPT_POSTFIELDS,$vars);
$ret = curl_exec($ch);
curl_close($ch);