Connecting to shopify and returning products

I'm tring to return products from my shopify store and dump the expected returned json on to the page. No products return via the code but if I go directly to the url in the form below I get the expected json displayed on the page:

http://ift.tt/1Mg2m9c

Can anyone help me return the json using this package which I'm using to connect to shopify? I'm also using Laravel 5.

I've noticed that the Input calls return nothing:

Input::get('code');
Input::all();

I added this to app.php:

'Input' => Illuminate\Support\Facades\Input::class,

I'm getting this error:

ERROR #22: The requested URL returned error: 401
in api.php line 309 at API->call(array('METHOD' => 'GET', 'URL' => '/admin/products.json?page=1')) in routes.php line 87

This is my route:

Route::get('/show_products', function() {

$shopify = App::make('ShopifyAPI');

// This creates an instance of the Shopify API wrapper and
// authenticates our app.
$shopify = App::make('ShopifyAPI', [
  'API_KEY' => 'api_key',
  'API_SECRET' => 'api_secret',
  'SHOP_DOMAIN' => 'shop_domain.myshopify.com',
  'ACCESS_TOKEN' => 'access_token'
]);

$shopify->installURL(['permissions' => array('read_products', 'write_products'), 'redirect' => 'http://ift.tt/1Mg2m9h']);

try {
      $verify = $shopify->verifyRequest(Input::all(), true);
      if ($verify)
      {
        $code = Input::get('code');
        echo "code: ".$code; // no code returned
        $accessToken = $shopify->getAccessToken($code);
        echo "accessToken: ".$accessToken; // no access token
      }
      else
      {
        echo "issue with data";
        // Issue with data
      }

} 
catch (Exception $e)
{
    echo '<pre> Error: ' . $e->getMessage() . '</pre>';
}

// Gets a list of products

  $result = $shopify->call([
    'METHOD'     => 'GET',
    'URL'         => '/admin/products.json?page=1'
  ]);

$products = $result->products;
print_r($products);
exit;
});

via Chebli Mohamed