/**
     * Will count number of <[a-z]> tag and </[a-z]> tag (will also validate the order)
     *
     * @source https://stackoverflow.com/a/5723868/1732359
     * @param  string $html
     * @param  boolean $checkOrder
     * @return boolean
     */
    public function isValidHtmlSnippet($html, $checkOrder = true)
    {
        // Add solidus characters to void elements, to prevent them from being matched in the regex that captures start tags.
        $html = preg_replace('#<((?!\/)(?:area|base|br|col|embed|hr|img|input|link|meta|param|source|track|wbr)(.*=".*")[^\/]*)>#i', '<${1} />', $html);

        preg_match_all('#<([a-z]+)(?: [a-z]+=".+")?>#i', $html, $start, PREG_OFFSET_CAPTURE);
        preg_match_all('#<\/([a-z]+)>#i', $html, $end, PREG_OFFSET_CAPTURE);

        $start = $start[1];
        $end = $end[1];
        if (count($start) != count($end)) {
            throw new Exception('Check numbers of tags');
        }

        if (! $checkOrder) {
            return true;
        }

        $decrementor = count($start) - 1;
        foreach ($end as $v) {

            if ($v[0] != $start[$decrementor][0] || $v[1] < $start[$decrementor][1]) {
                throw new Exception('End tag [' . $v[0] . '] not opened');
            }

            $decrementor--;
        }

        return true;
    }