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Modern PHP Versions: 8.0 Through 8.4
Prerequisites: Package development & publishing
A quick map of the features used throughout this course and which version introduced them:
- PHP 8.0 — union types, named arguments,
match, constructor property promotion, attributes. - PHP 8.1 — enums, readonly properties, Fibers, first-class callable syntax.
- PHP 8.2 — readonly classes, standalone types like
nullandfalse. - PHP 8.3 — typed class constants, cloning with updated readonly properties.
- PHP 8.4 — this course's baseline; property hooks and
asymmetric visibility (
public private(set)) are its headline additions.
Knowing this history helps explain why older tutorials or Stack Overflow answers sometimes look noticeably different from the code in this course.