How to get the shop id which i am accessing.

[Genie]

I have added multi shop functionality in my prestashop website and added a shop there. Now i can access http://10.10.0.201:3333/prestashop_test/redclient/ and http://10.10.0.201:3333/prestashop_test/ both shops. How can i get the shop id which i am accessing. I have created a module and now i want to get the shop id in front end view with the custom module page.

 

I have tried echo $id_shop = intval($cart->id_shop);

but this is returning 0.

 

Can any one tell me how to overcome this problem.