// Method Bearer + parameters by Post $data = array( 'requester_ip' => $_SERVER['SERVER_ADDR'], ); $authorization = "Authorization: Bearer ". $res1['id_token']; $h = curl_init($introspection_endpoint); curl_setopt($h, CURLOPT_HTTPHEADER, array( 'Content-Type: application/x-www-form-urlencoded', 'Authorization: Bearer ' . $id_token )); curl_setopt($h, CURLOPT_RETURNTRANSFER, true); curl_setopt($h, CURLOPT_POST, 1); curl_setopt($h, CURLOPT_POSTFIELDS, http_build_query($data)); ...