Linux/PHP/MySql
I have used PHP for well over 15 years at work. The speed at which an idea sales has to migrate/extract data for a customer can be realised quickly into a working solution on Linux with a backend MySQL database is very powerful. It has it flaws but making changes then running the code without having to wait for a compile saves a lot of time. The other benefit I also see is that there are so many folks using it that someone else out there usually has a solution to a tricky part that you need to code.
dobbers
Biting the hand that feeds IT
