pocketmine\level\Level::getBlockTempData PHP Method

    public function getBlockTempData(Vector3 $pos)
    {
        if (isset($this->blockTempData[self::blockHash($pos->x, $pos->y, $pos->z)])) {
            return $this->blockTempData[self::blockHash($pos->x, $pos->y, $pos->z)];
        }
        return 0;
    }