{ "code":"SIGN_ERROR", "detail": { "detail":{"issue":"sign not match"}, "field":"signature", "location":"authorization", "sign_information":{ "method":"POST", "sign_message_length":290, "truncated_sign_message":"POST\n/v3/pay/transactions/app\n1554208460\n593BEC0C930BF1AFEB40B4A08C8FB242\n{\"amount\n", "url":"/v3/pay/transactions/app" } }, "message":"签名错误，请检查后再试" } 什么情况？

https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/user-info/auth.checkEncryptedData.html 如何将手机号授权之后返回的DecryptData转换成sha256字符串，

[图片]

代码： $obj = new \CURLFile(realpath($filePath)); $obj->setMimeType("image/jpeg"); $file['media'] = $obj; $url = "https://api.weixin.qq.com/wxa/img_sec_check?access_token=".$accessToken; $info = $this->http_request($url,$file); $info =  json_decode($info,true); dump($info);     //HTTP请求（支持HTTP/HTTPS，支持GET/POST）     private function http_request($url, $data = null)     {         $curl = curl_init(); //        curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: multipart/form-data'));         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($curl, CURLOPT_POST, TRUE);             curl_setopt($curl, CURLOPT_POSTFIELDS,$data);         }         curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);         $output = curl_exec($curl);         curl_close($curl);         return $output;     } 任何图片及大小，接口返回的都是ok，麻烦大神们帮我看下问题出在哪儿 [图片]