address review comment

Author: jdpedrie

cloud_sql/sqlserver/pdo/app.yaml

@@ -21,6 +21,7 @@ env_variables:
   DB_USER: my-db-user
   DB_PASS: my-db-pass
   DB_NAME: my_db
+  DB_HOSTNAME: localhost
 
 # Defaults to "serve index.php" and "serve public/index.php". Can be used to
 # serve a custom PHP front controller (e.g. "serve backend/index.php") or to

cloud_sql/sqlserver/pdo/src/DB.php

@@ -32,8 +32,9 @@ public static function createPdoConnection()
         // $username = 'your_db_user';
         // $password = 'yoursupersecretpassword';
         // $schema = 'your_db_name';
+        // $hostname = 'your_hostname';
 
-        $dsn = sprintf('sqlsrv:server=(local);Database=%s', $schema, $hostname);
+        $dsn = sprintf('sqlsrv:server=%s;Database=%s', $hostname, $schema);
 
         return new PDO($dsn, $username, $password);
         # [END cloud_sql_sqlserver_pdo_create]