Sometimes, no matter how senior you are, little issues like this can humble you. I recently faced a confusing issue where I was expecting a relationship to give me a User object, but instead, it just gave me a number! After two days of scratching my head, I finally figured out what went wrong.
PHP
Immutability in PHP Beyond readonly
A deep dive into immutability in PHP, from readonly properties and interior mutability to immutable value objects, collections, dates, cloning, boundaries, and testing. Read more