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Derived Collections

You can create custom collection classes by extending the Doctrine\Common\Collections\ArrayCollection class. If the __construct semantics are different from the default ArrayCollection you can override the createFrom method:

final class DerivedArrayCollection extends ArrayCollection
{
    /** @var \stdClass */
    private $foo;

    public function __construct(\stdClass $foo, array $elements = [])
    {
        $this->foo = $foo;

        parent::__construct($elements);
    }

    protected function createFrom(array $elements) : self
    {
        return new static($this->foo, $elements);
    }
}