My final year university dissertation was on the topic of Static Code Analysis, specifically the integration of IDEs (Integrated Development Environments) with Static Code Analysis. The idea was to make Static Code Analysis accesible to the developer, without them having to install and use additional specialist Static Code Analysis software.
The IDE used is called CodeMirror that provides a code editing area, syntax highlighting, line numbering and an API. CodeMirror was slightly modified to detect deprecated PHP functions and highlight them.
DevBug has some known bugs and limitations at present which I will address in the near future. For now it is still useful as a quick and easy place to run some PHP functions or pages through to check for potential issues. As far as I know DevBug is the only free online PHP Static Code Analysis tool available.
I’m still interested in bug reports or feature requests, DevBug can be found here: