We have PHP experts with a lot of free software knowledge which can solve almost any PHP, Server and CMS related problem.
With that in mind, and depending on the size of the project to correct, it can take more or less than 3 days. The bid is based on a simple 10 php page 3 days work. Please let us now more information about the project, our final price doesn't depend on number of pages but rather on the number of errors to correct (ex: the project can have 1000 files and the proposal still be the same).