Website Bad Bot Blocker in Php/MySQL

Need a bot blocker created in php/mysql, I am not interested in using .htaccess. I wish to be able to block any type of "User Agent" that accesses a website. Need a form to add the user agent to the database (along with edit / remove) and a redirect url field. Then the html generated code to add to the site to block the bots. This should be a very simple job for someone that knows what he/she is doing. I do not require any design but I will supply a base for you to work from. This job is also only for someone in the United States and someone that can read and type proper english. The following Anti-Bot characters are required to be posted with your bid "abzgvxt65rtr43wn". Payment - Will only be made when the job is done, tested, and fully working. I will not escrow any payment as my perfect feedback speaks for itself. If these payment terms are not agreed with by you then do not bother bidding. Max Budget: $60.00 any bid higher than this will be ignored. Free Scripts or Open Source scripts will NOT be used, this must be and will be coded from scratch. Additional information will be discussed with a proper coder.