php – Page 50 – Türker Yıldırım

Parameter type widening, and the interface it unblocks

NoteAugust 13, 20182 min read

Removing a type hint in a child class used to be a fatal error, which meant an interface written with a concrete type could never be relaxed without…

usort is not stable, and the tiebreaker that fixes it

NoteAugust 3, 20182 min read

PHP’s sorts are not stable, so two elements the comparator calls equal may come out in either order — and that order can differ between array sizes, because…

A Dockerfile per service, and why the shared one had to go

Deep diveJuly 31, 201815 min read

One image with Apache, Nginx, PHP and MySQL in it, because that is how it starts. Splitting it, what each file may contain, and the uid problem on…

iterator_to_array collides keys unless you tell it not to

NoteJuly 24, 20182 min read

Materialising a generator with iterator_to_array preserves keys by default, and a generator that yields without a key restarts its counter on every inner traversal — so a nested…

Register a Gutenberg block from PHP

SnippetJuly 19, 20181 min read

A recursive CTE walks a tree without a loop in PHP

NoteJune 27, 20182 min read

Fetching a category and all its descendants meant a query per level, in a loop, with the depth unknown — so the number of round trips depended on…

composer prohibits explains why you cannot upgrade

NoteJune 27, 20181 min read

A refused upgrade produces a wall of conflict output that names twenty packages and does not say which one is responsible. prohibits answers the question directly. why-not is…

A compiler pass, and the one time you need one

NoteJune 20, 20182 min read

The container is built once and then frozen, and a compiler pass is the hook that runs during that build — which is the only moment you can…

The .env file Symfony 4 commits, and the one it does not deploy

NoteJune 15, 20182 min read

Symfony 4 puts a .env file in the repository root and reads it through Dotenv, which is convenient locally and is not how the framework expects production to…

The N+1 that does not appear in the query log

Deep diveJune 14, 201810 min read

340 queries on a page showing twenty rows, and none of them are slow. Every one is under the threshold, which is why the slow log has nothing…