/**
* post提交方式
* urlPost = 提交内容
* url = 链接
*/
private function Post($curlPost,$url){
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_NOBODY, true);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $curlPost);
$return_str = curl_exec($curl);
curl_close($curl);
return $return_str;
}