The Case Of The Insensitive Filesystem There is a special kind of bug that only exists between your laptop and the production server. It compiles, it tests, it ships, and then it 500s. Somewhere along the way, User.php became user.php, and one of the two machines had an opinion about it. PHP has no opinion. […]
04
Aug
Aug
When PHP Meet Unicode: A Tour of Identifiers Beyond ASCII Every year, like clockwork, someone rediscovers that a day is not reliably 86400 seconds long, gets righteously indignant about daylight change on Hacker News, and two hundred comments later the whole internet has relearned a lesson it relearns every March and October. PHP’s “you can […]
25
Jul
Jul
I Checked Every php.* Domain on the Internet There are 1,437 top-level domains recognized by IANA today, things like .com, .museum, .fr, and obscure ones such as .ismaili and .bugatti. I decided to find out how much of the internet’s php.* namespace has actually been claimed, checking php.<tld> against every single one of them and […]
24
Jul
Jul
__FILE__: The Magic Constant With Specific Usage Every older PHP developer has meet __FILE__ early, usually while copy-pasting a WordPress plugin header from a tutorial written in 2009. There are lots of blogs posts documenting it: it is also quite famous outside the PHP universe. Nowadays, however useful is this magic constant, it seems it […]
23
Jul
Jul
There and Back Again: Round-Trip Testing in PHP Most of the work in a unit test is not calling the function. It is knowing what the function is supposed to return. You call it, you get a value, and now you type the expected value by hand and pray you did the arithmetic in your […]
20
Jul
Jul
Constant Scalar Expressions In PHP Constants are the immovable rocks of a PHP application. Once defined, they never change. Yet, since PHP 5.6, those rocks may be carved with expressions. This is the realm of constant scalar expressions, where PHP allows a little bit of calculation in a place that was, for a long time, […]
13
Jul
Jul
Hidden Traps with Chained Assignments If you’ve been writing PHP for a while, you’ve almost certainly written a few chained assignments yourself. It’s that neat, concise trick where you initialize multiple variables or properties on a single line: It looks clean. It feels efficient. It’s the kind of line that makes you feel, for one […]
09
Jul
Jul
When Generators Actually Makes Sense Generators are one of PHP 8 best-loved features. Sprinkle a yield into a function and suddenly you’re processing millions of rows with constant memory. At least, that’s the promise. The reality is more nuanced: lazy evaluation only pays off when the underlying data source can produce records incrementally. If the […]
09
Jul
Jul
Quand les générateurs ont vraiment du sens Les générateurs sont l’une des fonctionnalités les plus modernes de PHP 8. Il suffit d’ajouter un yield dans une fonction pour, soudainement, traiter des millions de lignes à mémoire constante. C’est du moins ce que promet cette fonctionalité. La réalité est plus nuancée : l’évaluation paresseuse, de l’anglais […]
07
Jul
Jul
Method Fossilisation in 2026 [This is an updated version of this article ‘Method fossilisation’] Method fossilisation happens when methods get harder to update, due to sprawling overwriting. It is a process, more than a final state. In particular, it happens to methods when the signature is shared across multiple classes, via inheritance and interfaces. As […]
02
Jul
Jul
Types and Tests: Not Rivals, Just Working Different Shifts A common source of confusion in PHP development is the relationship between static analysis and unit testing. Are they redundant? Does adding types mean fewer tests? Does a comprehensive test suite make a type checker unnecessary? No to all three. They cover different grounds. The interesting […]