Horde_Text_Filter_Linkurls::callback PHP Méthode

    public function callback($match)
    {
        $href = $orig_href = $match[0];
        if (strpos($match[2], ':') === false) {
            $href = 'http://' . $href;
        }
        if ($this->_params['callback']) {
            $href = call_user_func($this->_params['callback'], $href);
        }
        $href = htmlspecialchars($href);
        $class = $this->_params['class'];
        if (!empty($class)) {
            $class = ' class="' . $class . '"';
        }
        $target = $this->_params['target'];
        if (!empty($target)) {
            $target = ' target="' . $target . '"';
        }
        $decoded = $orig_href;
        try {
            if (strlen($host = $this->_parseurl($orig_href, PHP_URL_HOST))) {
                $decoded = substr_replace($orig_href, Horde_Idna::decode($host), strpos($orig_href, $host), strlen($host));
            }
        } catch (Horde_Idna_Exception $e) {
        } catch (InvalidArgumentException $e) {
        }
        $replacement = '<a href="' . $href . '"' . ($this->_params['nofollow'] ? ' rel="nofollow"' : '') . $target . $class . '>' . htmlspecialchars($decoded) . '</a>';
        if (!empty($this->_params['noprefetch'])) {
            $replacement = '<meta http-equiv="x-dns-prefetch-control" value="off" />' . $replacement . '<meta http-equiv="x-dns-prefetch-control" value="on" />';
        }
        if ($this->_params['encode']) {
            $replacement = chr(0) . chr(0) . chr(0) . base64_encode($replacement) . chr(0) . chr(0) . chr(0);
        }
        return $replacement;
    }