I have experience with HTML5 and PHP (as you requested) as well as CSS, JavaScript and SQL so have all the necessary skills required to complete this project. I've also worked on games, responsive HTML and websites before so will be able to make it to your exact specification, but I also have lots of creativity if you want me to do my own thing.
I can work many hours a day and will be able to finish the project quite quickly, although it will obviously take longer if you want something really complicated. Just let me know what you want and I can get started on it straight away.
If you want to discuss it further, send me a message.