1 week project -- 2

I need a freelancer who can customize a web app game built with PHP / Json / Javascript / HTML / MySql in just 1 week. The main objective is to apply the design visuals that we have already prepared and adjust/customize the work flow of the game. I have detailed specifications for the design and functionality of the game, which I will provide to the freelancer. The ideal candidate should have experience with PHP, Json, Javascript, HTML, and MySql. The preferred deadline for the project is 7 days.