Start With Reproducibility

If you can reliably recreate a bug, you can track down its cause far easier.

Use Browser DevTools Effectively

• Set breakpoints in sources tab
• Use network waterfall to diagnose slow assets
• Check for layout shift problems in Lighthouse

Debug PHP Locally With Xdebug

Pause execution and explore variable state:

xdebug.mode=debug
xdebug.start_with_request=yes

Leverage Logging

Custom logs help trace flows across async behaviour.

Think Hypotheses, Not Random Experiments

Form a theory → test → refine. Repeat until the behaviour is fully understood.

Great debugging saves hours of frustration and builds confidence in shipping changes.