Base::highlight PHP Method

    function highlight($text)
    {
        $out = '';
        $pre = FALSE;
        $text = trim($text);
        if ($text && !preg_match('/^<\\?php/', $text)) {
            $text = '<?php ' . $text;
            $pre = TRUE;
        }
        foreach (token_get_all($text) as $token) {
            if ($pre) {
                $pre = FALSE;
            } else {
                $out .= '<span' . (is_array($token) ? ' class="' . substr(strtolower(token_name($token[0])), 2) . '">' . $this->encode($token[1]) . '' : '>' . $this->encode($token)) . '</span>';
            }
        }
        return $out ? '<code>' . $out . '</code>' : $text;
    }