I am thinking to built a shopping cart by using PHP. The shopping cart program has to support Membership function and Content Management function and has to be multi-lingual. As PHP can access database and support SSL, it seems all i need is already there. But someone said big sites usually use java instead PHP. Is that true ? Any reason for that ?
By the way, is there already some open source or shareware that can provide all i want and save my reinvent the wheel effort?