_MarkdownExtra_TmpImpl::doFootnotes PHP Method

    protected function doFootnotes($text)
    {
        #
        # Replace footnote references in $text [^id] with a special text-token
        # which will be replaced by the actual footnote marker in appendFootnotes.
        #
        if (!$this->in_anchor) {
            $text = preg_replace('{\\[\\^(.+?)\\]}', "Ffn:\\1:", $text);
        }
        return $text;
    }