pocketmine\math\Vector3::getFloorZ PHP Method

    public function getFloorZ()
    {
        return (int) floor($this->z);
    }

 public function getLocByVector(Vector3 $block, $levelFolderName)
 {
     return $block->getFloorX() . ";" . $block->getFloorY() . ";" . $block->getFloorZ() . ";" . $levelFolderName;
 }