HtmlDiff::__construct PHP Метод

    public function __construct($oldText, $newText, $encoding = 'UTF-8')
    {
        $this->oldText = $this->purifyHtml(trim($oldText));
        $this->newText = $this->purifyHtml(trim($newText));
        $this->encoding = $encoding;
        $this->content = '';
    }