Difficulty in executing laravel 5.2 database query

This might be silly question, but since I am new to laravel, I am finding it somewhat difficult to setup database. I am using laravel 5.2. IN config>database.php these are my settings

'default' => env('DB_CONNECTION', 'mysql'),

and for mysql :

'mysql' => [
        'driver'    => 'mysql',
        'host'      => env('DB_HOST', 'localhost'),
        'database'  => env('DB_DATABASE', 'larasite'),
        'username'  => env('DB_USERNAME', 'root'),
        'password'  => env('DB_PASSWORD', ''),
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
    ],

Then I also changed .env and .env.example file's settings

DB_HOST=localhost
DB_DATABASE=larasite
DB_USERNAME=root
DB_PASSWORD=""

Now when in routes.php I have this code:

Route::get('about', function(){
  $posting = DB::query('select * from posts');
  dd($posting);
});

And then when I visit localhost:8000/about I get following error.

Builder {#118 ▼
#connection: MySqlConnection {#114 ▶}
#grammar: MySqlGrammar {#115 ▶}
#processor: MySqlProcessor {#116}
#bindings: array:6 [▶]
+aggregate: null
+columns: null
+distinct: false
+from: null
+joins: null
+wheres: null
+groups: null
+havings: null
+orders: null
+limit: null
+offset: null
+unions: null
+unionLimit: null
+unionOffset: null
+unionOrders: null
+lock: null
#backups: []
#bindingBackups: []
#operators: array:26 [▶]
#useWritePdo: false
}

I noticed that, even If I change settings and enter wrong details, I get same error. What's happening? How to solve this?

via Chebli Mohamed