Sokil\Mongo\Cursor::findRandom PHP Method

    public function findRandom()
    {
        $count = $this->count();
        if (!$count) {
            return null;
        }
        if (1 === $count) {
            return $this->findOne();
        }
        return $this->skip(mt_rand(0, $count - 1))->limit(1)->current();
    }