_MarkdownExtra_TmpImpl::appendFootnotes PHP Method

    protected function appendFootnotes($text)
    {
        #
        # Append footnote list to text.
        #
        $text = preg_replace_callback('{F\\x1Afn:(.*?)\\x1A:}', array($this, '_appendFootnotes_callback'), $text);
        if (!empty($this->footnotes_ordered)) {
            $text .= "\n\n";
            $text .= "<div class=\"footnotes\">\n";
            $text .= "<hr" . $this->empty_element_suffix . "\n";
            $text .= "<ol>\n\n";
            $attr = "";
            if ($this->fn_backlink_class != "") {
                $class = $this->fn_backlink_class;
                $class = $this->encodeAttribute($class);
                $attr .= " class=\"{$class}\"";
            }
            if ($this->fn_backlink_title != "") {
                $title = $this->fn_backlink_title;
                $title = $this->encodeAttribute($title);
                $attr .= " title=\"{$title}\"";
            }
            $num = 0;
            while (!empty($this->footnotes_ordered)) {
                $footnote = reset($this->footnotes_ordered);
                $note_id = key($this->footnotes_ordered);
                unset($this->footnotes_ordered[$note_id]);
                $ref_count = $this->footnotes_ref_count[$note_id];
                unset($this->footnotes_ref_count[$note_id]);
                unset($this->footnotes[$note_id]);
                $footnote .= "\n";
                # Need to append newline before parsing.
                $footnote = $this->runBlockGamut("{$footnote}\n");
                $footnote = preg_replace_callback('{F\\x1Afn:(.*?)\\x1A:}', array($this, '_appendFootnotes_callback'), $footnote);
                $attr = str_replace("%%", ++$num, $attr);
                $note_id = $this->encodeAttribute($note_id);
                # Prepare backlink, multiple backlinks if multiple references
                $backlink = "<a href=\"#fnref:{$note_id}\"{$attr}>&#8617;</a>";
                for ($ref_num = 2; $ref_num <= $ref_count; ++$ref_num) {
                    $backlink .= " <a href=\"#fnref{$ref_num}:{$note_id}\"{$attr}>&#8617;</a>";
                }
                # Add backlink to last paragraph; create new paragraph if needed.
                if (preg_match('{</p>$}', $footnote)) {
                    $footnote = substr($footnote, 0, -4) . "&#160;{$backlink}</p>";
                } else {
                    $footnote .= "\n\n<p>{$backlink}</p>";
                }
                $text .= "<li id=\"fn:{$note_id}\">\n";
                $text .= $footnote . "\n";
                $text .= "</li>\n\n";
            }
            $text .= "</ol>\n";
            $text .= "</div>";
        }
        return $text;
    }