Upgrading Legacy to the Latest PHP Version

Your application runs on an old PHP version that is about to go out of support. How to upgrade without breaking the application? You will need the right tools for detecting and fixing those issues, as well as a way to verify that the application is still working correctly. In this presentation, I will share the strategy that I employed when upgrading millions of lines of untested code.

Speaker Deck
Frameworkless: love to see this on the board! #phpday2024

I've uploaded the slides of yesterdays talk "Watch the clock" at #phpday to https://joind.in/talk/02982

And while you're there: I'd really appreciate some feedback! Thanks!

Also don't forget to give the other speakers some feedback on what went good and what can be improved to make their future talks even better!

/cc @phpday #phpday2024

Watch the clock - phpday 2024 - Joind.in

This year's #phpday2024 looks like it's fun again. I hope everyone enjoys the stay as much as I enjoy the toots. 
Overheard:
- I own 94 domains.
- That requires an intervention.
#phpday #phpday2024

@heiglandreas throwing time-comparing challenges at us during @phpday

Because time() is a light pastime in PHP πŸ« πŸ™ƒ

#phpday2024 #phpday #phpday24

Overheard:
- 1 kilo of water is 1 litre.
- At what altitude and temperature?
#phpday #phpday2024
I’m at #phpday2024
#phpday2024 begins πŸ₯°
In urgent need of late night gluten free food. At venue for #phpday2024 and Deliveroo has failed to deliver. The only nearby places are kebabs, pizza and Chinese which are all very Not Gluten Free. Supermarkets are now closed. Does anyone know how the f* I can get food here?