HP UK Conference 2010 is PHP London's fifth annual conference. More information about the previous four events can be found on their archived websites: View here for archieve details. The PHP UK Conference 2010 is powered by PHP London, now a limited company of the UK. Its board of directors is made up of members of the executive committee, and their roles in the organisation of the event are an extension to their normal duties for the organisation. The conference will consist of reviewing the code of various well-known open source PHP applications, this session presents the most extensively used antipatterns -counterproductive design patterns- in the PHP world. You will learn what is wrong with each example, and why. We will analyze alternative solutions and discuss their advantages and disadvantages.