Link ok!<br><hr>Array
(
    [grant_type] => authorization_code
    [code] => 
    [redirect_uri] => https://www.happyweb.com.tw/ksicallback_1.php
    [client_id] => lXzeMcLMIpVkzz0yt0enF0
    [client_secret] => axTX4hJwQFKOrUTL5B5cvHL8vFqso2YxpIThlMVq371
)
<hr>{"grant_type":"authorization_code","code":null,"redirect_uri":"https:\/\/www.happyweb.com.tw\/ksicallback_1.php","client_id":"lXzeMcLMIpVkzz0yt0enF0","client_secret":"axTX4hJwQFKOrUTL5B5cvHL8vFqso2YxpIThlMVq371"}<hr>{
  "status" : 400,
  "message" : "code is required",
  "access_token" : null
}<hr>Request failed