You'll have to handle time functions:
To compare two different dates -->
- Code: Select all
echo ( strtotime ("10 September 2003") - strtotime ("now") );
To build the bidding system you will have to use mysq database to manage users' data.
Forms to input text, images, prices, posts, replies...
Lots of form checks to validate the inputs and the system as is.
I suggest that you write a text explaining all you want it to do, make a graphic scheme of the aplication: databases, tables, files, etc...
Is not an easy task... but this a good chance to have fun
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