//https请求（支持GET和POST）
 function https_request($url, $data = null)
 {
     $curl = curl_init();
     curl_setopt($curl, CURLOPT_URL, $url);
     curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
     curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
     if (!empty($data)){
         curl_setopt($curl, CURLOPT_POST, 1);
         curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
     }
     curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
     $output = curl_exec($curl);
     curl_close($curl);
     return $output;
 }