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Adam Zielinski

Hi there! 👋 I’m Adam from Wrocław, Poland – a WordPress core committer at Automattic and the creator of WordPress Playground. This is my blog.

My Posts

WordPress Playground: 2025 Year in Review
An LLM workflow for solving complex coding problems
Jak przygotować się aktorsko do wygłoszenia mowy w technice Meisnera? + Moja mowa w peruce sędziego 🙂
Running Node.js in the browser
PHP Playground
Moje sceny z festiwalu improwizacji Bulaj 2025
My performances at European Vocal Camp 2025
Drafting a SQLite database reader in 15 minutes with LLMs
String Length Differs Between Programming Languages
Unicode Facts You Should Know
Short introduction to Unicode and UTF-8
mysqli_real_escape_string() can be dangerous
Running PHP code after closing the HTTP connection
Code Contributions I’m proud of
WordPress as a git repo
Moje Podsumowanie 2024
Generating 1MB of PHP code with AI, a story of MySQL query parser
Cloning a Git Repository From a Web Browser Using fetch()
3 Online Writing Mistakes That Almost Defeated Me – and How I Overcame Them
Learn how to build PHP to WebAssembly in 10 minutes
WordPress Playground was prototyped in a week
Why did I build WordPress Playground? It was easier than installing WordPress.
How to Modify HTML in a PHP WordPress Plugin Using The New Tag Processor API
How to curry functions in TypeScript so that it always works correctly?
How to Implemented Conditional Fields In TypeScript?
On Average, Online Reviews Are Broken
Meet people like an improv comedian
Online Reviews #2: Experiences don’t fit into star-shaped, byte-sized containers
Online Reviews #1: Star Ratings Are Deeply Misleading
The Wild West of Crypto
2021 in review – goals bankruptcy, personal breakthroughs, and a bike accident
Web3 publishing? Sure, if you like your work held captive.
The Death of a Degree
No To BYOM: Bring Your Own Motivation
Don’t Waste Time On Boring Programming Lessons
How balancing action and acceptance helped me overcome my achievement addiction and find joy?
How did I get my Bachelor’s in six months?

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