PHP program needing fixed

I have small program written in PHP and utilising MySql.? It takes results of online form and splits them into 2 - part one going direct to the intended recipient; part two being written to the database.? The recipient uses Username/Password to login and retrieve the second part. The system started not working - aparently something to do with certain Browsers (it worked fine in IE).? However, the exact nature of the problem was not clear.? The issue was looked at by someone but it seems to have got worse as a result and is not working consistently. Require someone with good PHP skills to looks at code and test.? Further details for successful bidder. ## Deliverables Can provide access to existing site.