Category: Coding

Pest is a modern PHP testing framework built on top of PHPUnit that provides a more expressive, fluent API — expect($value)->toBe(42) — and reduces test boilerplate significantly. Pest’s higher-order tests, built-in parallel test execution, and architectural testing rules (arch()) make it a compelling alternative to raw PHPUnit for WordPress plugin test suites.

PHP 8.4 introduces property hooks — get and set hooks that run when a property is read or written, without requiring explicit getter/setter methods. They bring computed properties (a property whose value is derived from other state) and validated properties (a property that enforces a constraint on write) into the language as first-class syntax, making…

PHP 8.1 introduced readonly properties (written once at construction, immutable thereafter) and PHP 8.2 extended this to entire readonly classes where all properties are implicitly readonly. These features enable clean immutable value-object patterns in WordPress plugins — DTOs for REST API responses, money values, post metadata snapshots — without the boilerplate of private setters and…

PHP 8.1 enums provide a first-class alternative to the class-constant pattern that WordPress plugins have used for decades. Enums are type-safe, support methods and interfaces, and integrate cleanly with WordPress’s hooks API, sanitize_*() family, and database layers — while making intent far more explicit in code reviews and static analysis.

PHP 8.1 introduced Fibers — a low-level cooperative concurrency primitive that lets you pause execution of a function, yield control back to the caller, and resume later. While PHP remains single-threaded, Fibers unlock patterns like async I/O coordination, coroutine-style generators, and lightweight task queues that were previously impossible without forking or external queues.

PHP 8.4 (released November 2024) introduced property hooks — getter/setter logic directly on class properties — asymmetric visibility for readonly-like properties, array_find() and related array functions, and the #[\Deprecated] attribute. These changes significantly affect how modern WordPress plugin architecture is written.

PHP 8.3 introduced typed class constants, the json_validate() function, readonly property amendments in child classes, the Override attribute, and improvements to array_sum() and array_product(). These changes affect how modern WordPress plugins should be written.

PHPStan level 8 enforces the strictest type analysis — it reports missing return types, mixed type propagation, and unsafe array access that lower levels ignore. Getting a WordPress plugin to pass level 8 requires proper type annotations and understanding how PHPStan handles WordPress’s dynamically-typed functions.

Rector is an automated PHP refactoring tool that upgrades your code from one PHP version to another, enforces coding standards, and fixes deprecated API usage — all in a single command. For WordPress plugin developers, it eliminates hours of manual find-and-replace when migrating to PHP 8.x.