Web Designer Firm Grasp of PHP

I want to develop a website. It is a directory wherein customers can competant php skills must be applied in order to ensure that the customers can upload information about their business within their choice of genre, each upload form will need to include a price option so a they can choose whether to have a free or enhanced listing (similar to yell.com)
It must also have easy content management so that I can update it once it i complete.

Please could you contact me so we could arrange a quote