How to make a dinamic php?

Hi,

I have managed to get a php script that is a simple advertisemnt posting free service for people that have stuff to sell.

The way it works is that people sign up free to the service and then place their ads. The ads then show up in their main screen after submission.

There is a submission page where the user give a price to the item they want to sell and include a picture of his item. And this price is shown in the advert page generated. There is a email to contact the seller also.

What I want to include is a way the user can bid the highest they think the item is worth. The seller makes his own price for his item, however the user, potential buyer, then submits his own bid value in a form. This bid is then sent via email to the seller and printed immediately in the ad webpage. Other users that are interested in that item knows that there were bids and can bid also.The seller can sell then the item to who ever gives a higher bid or not.

Is there a way i can do this??

Also how is possible to add categories in mysql and make the ad entries be seachable. At this testing moment all entries are together withotu any sorting or searching facility.

Your help is appreciated.

Polo

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