best way to debug CI

@admin0,

You just asked an open ended question (You will receive many different answers). There are many ways to debug CI (it is a PHP framework after all). It depends on the developer and what they are comfortable with. I prefer a combination of Xdebug and Firefox Developer Tools (netbeans as my IDE). I also have a development and production copy of the software as well. This helps me to recreate the issue and solve it in DEV before pushing it to PROD.

P.S. CI also has built in features to assist in debugging as well. A Profiler and Logging just to name a few.