Debugging/developing testlink in a IDE?

[aostad]

What is needed to open testlink project in a IDE (e.g. Eclipse for PHP)? is there a Project file/folder that can be downloaded then imported into a IDE?

I want to run testlink with a debugger and see certain data and variables and learn how it works. Please let me know what is needed to do this. Thanks for your help.

[fman]

Personally i do not use any kind of IDE. You can try phpStorm (jetbrains has donated us a license).
Simple way to learn is a parallel installation where you display variables via echo