Interesting PHP question

Recently, I've come up with an interesting question that can potentially be used for interviewing candidates :)

We have such a PHP class.

class Collection implements Countable
    protected $items = [];

    public function __construct(array $data)
        $this->items = $data;

    public function count()
        return count($this->items);

$collection = new Collection(['one', 'two', 'three']);

Which is going to be faster: count($collection) or $collection->count()?

Alex Plekhanov

Hi, I'm Alex Plekhanov.

I am PHP and Laravel enthusiast and I run my own projects