Create a script like www.imobcodes.com

Hi there I need somebody to create a script like www.imobcodes.com. I don't care about how it looks, I just want a script like that. Since it is not technically designing a website, and only providing a script where users can submit a code, or pay to have it highlighted, this project could be done for less than $20. This is exactly what I want: A script where users can submit a code (once every hour), and it shows a page full of these codes. You can pay to have your code at the very top of the page for a certain time. Any offers above $20 will NOT be considered