i dont get value of check box in my database..

I think you are not clear with php. So let me tell you php is backend language you can also say it server side language so it will intreact with the data sent to the server. I saw your code you are trying to achieve something with client side and this is not possible with php you have to use js or jquery to handle the client side and then send the checked value to the server and php will store it in database. Try to first understand the basics then only you will understad the concept. 

 

Hope this helps you. 

In order to get the selected checkbox values in jquery you can try this code