splitStringByLines example

    public function diffToArray($from, $to, LongestCommonSubsequenceCalculator $lcs = null): array
    {
        if (is_string($from)) {
            $from = $this->splitStringByLines($from);
        } elseif (!is_array($from)) {
            throw new InvalidArgumentException('"from" must be an array or string.');
        }

        if (is_string($to)) {
            $to = $this->splitStringByLines($to);
        } elseif (!is_array($to)) {
            throw new InvalidArgumentException('"to" must be an array or string.');
        }

        [$from, $to, $start, $end] = self::getArrayDiffParted($from, $to);