src/Collection.php
public function count()
    {
        if (is_array($this->items) && $this->items !== null) {
            return count($this->items);
        }
        return 0;
    }
public function count()
    {
        if (is_array($this->items) && $this->items !== null) {
            return count($this->items);
        }
        return 0;
    }
Get count.

@return integer