使用“下一步”按钮循环浏览

I have a php file with a div containing img and the img is coming from my database which is in an arrary. I want to code a "Next" btn, so it loops through the array and display different imgs. But I do not know how to do this by using J.Query and php. Plz give some help. ThxI have a php file with a div containing img and