BaseButton::setCounter

public function setCounter($counter)
{
	if (in_array($counter, [0, '0', '', null, false], true))
	{
		$this->counter = null;
	}
	else if ((is_int($counter) && $counter > 0) || (is_string($counter) && mb_strlen($counter)))
	{
		$this->counter = $counter;
	}

	return $this;
}