MadExploits/Gecko ? reverse-engineered prompt

Build me a simple PHP web app for a local demo that helps me understand common website security mistakes and how to fix them.

I want a clean interface where I can upload a file to a test folder, browse files and folders, zip and unzip sample archives, and view basic system info like server settings and installed PHP modules. It should also show a few safe security checks, like whether dangerous settings are enabled, whether file permissions look too open, and whether the app is running in a protected environment.

Make it easy to log in, keep the session secure, and include a clear warning that this is only for authorized testing on my own machine. If you need current PHP or web security docs, look them up online.