"Understanding Unicode": my October 2025 talk at Longhorn PHP

I gave a talk, “Understanding Unicode”, at Longhorn PHP last month. It’s loosely based on “Why does ‘👩🏾‍🌾’ have a length of 7 in JavaScript?”, a blog post I wrote in 2023.

Though the talk is for PHP developers, I think it’s applicable to anyone who wants to understand more about Unicode, UTF-8, and more.

Here’s the recording:

You can also download the slides here.

If you want to learn more about this topic through a PHP lens, see this more detailed presentation by Andreas Heigl.