Object Cloning

Object Cloning — a practical guide to PHP clone object with clear examples you can reuse in real projects.

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Short description

Default cloning is shallow. Implement `__clone` for deep copies of nested objects.

clone + __clone

class Cart {
    public function __construct(public array $items) {}
    public function __clone(): void {
        // adjust cloned state if needed
    }
}
$a = new Cart(['book']);
$b = clone $a;