pocketmine\math\Matrix::set PHP Метод

    public function set(array $m)
    {
        for ($r = 0; $r < $this->rows; ++$r) {
            $this->matrix[$r] = [];
            for ($c = 0; $c < $this->columns; ++$c) {
                $this->matrix[$r][$c] = isset($m[$r][$c]) ? $m[$r][$c] : 0;
            }
        }
    }