Codebusters is where I write up the PHP and Python I use myself. I look after a number of websites and a few unattended scripts that run from cron on my own server, so most of what’s here comes from fixing something that broke.
Every example is run before it goes on the page, and where I’ve measured something (how long it takes, how many entries get lost) I give you the number. If I haven’t tested it, I’ll say so.
I use plain PHP with no Composer and no frameworks, because that’s what works on every host I’ve tried. If you’ve got a question or a topic you’d like covered, the contact page is the place to send it.