Traits in PHP OOP

Traits in PHP OOP — a practical guide to PHP traits with clear examples you can reuse in real projects.

OOP Tutorial Series (28/65). Prefer one article? Read the complete OOP tutorial.

Short description

Traits solve code reuse without multiple class inheritance. Watch for conflict resolution with `insteadof`/`as`.

Trait usage

trait HasTimestamps {
    public function touch(): void { $this->updatedAt = new DateTimeImmutable(); }
}
class Post {
    use HasTimestamps;
    public ?DateTimeImmutable $updatedAt = null;
}