use ??

Author: ylebre

lib/Routes/SolidIdp.php

@@ -165,8 +165,8 @@ public static function respondToToken() {
 			$request = $requestFactory->fromGlobals($_SERVER, $_GET, $_POST, $_COOKIE, $_FILES);
 			$requestBody = $request->getParsedBody();
 
-			$grantType = isset($requestBody['grant_type']) ? $requestBody['grant_type'] : null;
-			$clientId = isset($requestBody['client_id']) ? $requestBody['client_id'] : null;
+			$grantType = $requestBody['grant_type'] ?? null;
+			$clientId = $requestBody['client_id'] ?? null;
 			switch ($grantType) {
 				case "authorization_code":
 					$code = $requestBody['code'];