[ckbkr10]

PHP is not about lightweight, it's about rapid development. A lot of implementations in PHP are dead simple and can be debugged even by beginners.

You generally do not implement efficient systems in php, they are easy to debug, fast to code and quick to fix though.

[sroussey]

Most of the time you don’t really need to think about memory management either as the memory for the process is simply reset on every request.