Topic #php – Blog – Jiří Pudil

The case for contravariant template types

PHPStan has only supported invariant and covariant template types because they are so prevalent in real-world applications. But contravariant template types also have their use cases, and the latest release of PHPStan adds support for them, among other small improvements to generics.

2 years ago6 min read

The true power of sealed classes

In my recent post, I've introduced a PHPStan extension that brings support for sealed classes and interfaces to statically analyzed PHP. Looking back, I feel I haven't stressed the main benefit enough, so here I am doing it justice.

2 years ago4 min read

Seal your classes with PHPStan

Sealed classes are a useful feature of Kotlin: they allow you to specify which classes are allowed to extend a sealed class (or implement a sealed interface). With the recently released PHPStan 1.9.0, you can now introduce sealed classes to your PHP codebase too!

2 years ago4 min read

Your application needs a clock

Previously, I've discussed working with date and time values both server- and client-side, and I've covered storing temporal data in databases. This time, we're going to talk about telling time.

3 years ago5 min read

Beyond DateTime: a domain-driven approach to date and time

Time is omnipresent in software development. Pretty much every web application works with it in one way or another. Even the simplest blogging platform stores "when" a post should be published and then displays and sorts them using that information. While you might not run into any issues when developing a blogging platform, any more complex system can easily expose how complicated time actually is. Because time is complicated. And yet, many standard libraries in programming languages only give us a limited arsenal to tackle it.

3 years ago13 min read

Services don't need names

I love Nette Framework's dependency injection solution. I really do. This post is here to share this passion, explaining why I think it is the best DI solution in today's PHP ecosystem.

4 years ago11 min read

Don't bring your own HTTP client

If you are developing a library that needs to make HTTP requests, here's how not to make it difficult for your consumers.

5 years ago6 min read

Body parser middleware that has your back

If you've ever implemented an HTTP API in PHP, you probably know that there's one thing you have to do over and over and over: parse the request body and validate the resulting structure. Now that we have PSR-15, let's use a middleware for that!

5 years ago7 min read

Don't just float, swim with the floating point

They say you should understand floating-point precision by 35.0000000000014. This post is here to help you: it discusses how floats are (im)precise and why, demonstrates the problems you inevitably encounter when doing math with floats, and presents ways to prevent those problems by using more proper data types and structures.

5 years ago10 min read

The frameworkless application

There's a new buzzword on the PHP block: frameworkless. The activities of PHP communities last year made it possible to build robust applications, uniquely composed of little bits, without relying on a big framework. Let's find out how they work and if it's a good approach.

6 years ago8 min read

Hello, I am Jiří Pudil

I am a full-stack web developer from Brno, Czech Republic. I contribute to open-source projects, write a technical blog, and speak at meetups and conferences.

Learn more about me

Blog – #php