我有一个正在开发的插件。它在WordPress的单站点版本上运行良好。它安装在多站点版本的WordPress上，似乎可以在管理页面上工作，但当插件尝试添加javascript和css时，它不会被添加。

代码的显示部分如下所示。。。

   add_action(\'init\', array(&$this, \'init\'));

   function init() {
        // Gather gallery and template variables
        $url = explode(\'?\', \'http://\' . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]);
        $ID = url_to_postid($url[0]);
        load_plugin_textdomain(\'ngTemplateCreator\', ngTemplateCreator_DIR . \'/lang\', basename(dirname(__FILE__)) . \'/lang\');
        $t = get_post($ID);
        $c = 0;
        $regex_pattern = get_shortcode_regex();
        preg_match_all(\'/\' . $regex_pattern . \'/s\', $t->post_content, $regex_matches);

        // loop thru shortcode
        foreach ($regex_matches[3] as $key => $value) {
            if ($regex_matches[2][$key] == \'nggtc\') {
                $c = $c + 1;
                //  Found a NextGEN gallery find out what ID
                //  Turn the attributes into a URL parm string
                $attribureStr = str_replace(" ", "&", trim($value));
                $attribureStr = str_replace(\'"\', \'\', $attribureStr);

                //  Parse the attributes
                $defaults = array(
                    \'id\' => 0,
                    \'template\' => \'\'
                );
                $attributes = wp_parse_args($attribureStr, $defaults);

                if (isset($attributes["id"])) {
                    $this->gid = $attributes["id"];
                }
                if (isset($attributes["template"])) {
                    $this->tcname = $attributes["template"];
                }

                $wrapper = "nggtc_gallery_" . $this->gid . "_" . $c;

                if (!empty($this->gid) && !empty($this->tcname)) {
                    $images = get_ngg_gallery($this->gid);
                    $templates = get_custom_template($this->tcname);

                    if ($templates && $images) {
                        foreach ($templates as $template) {
                            if ($template->bottom_javascript) {
                                $this->bottom_javascript = $this->bottom_javascript . process_script_shortcode($template->bottom_javascript, $wrapper, $panelid, $panelcss, $filmstripid, $filmstripcss) . "\\r\\n\\r\\n";
                            }
                        }
                    }
                }
            }
        }
        $this->count = $c;
        if ($this->bottom_javascript) {
            add_action(\'wp_footer\', array(&$this, \'footerScripts\'), 200);
        }
        wp_reset_query();
    }

    function process_script_shortcode($script, $wrapper, $panelid, $panelcss, $filmstripid, $filmstripcss) {
        $out = remove_php($script);

        // Swap shortcode
        if($out) {
            // strip html from filmstrip variables
            $filmstripi = str_replace(" id=\\"", "", $filmstripid);
            $filmstrip = str_replace("\\"", "", $filmstripi);
            $filmstripcs = str_replace(" class=\\"", "", $filmstripcss);
            $filmstripc = str_replace("\\"", "", $filmstripcs);
            $out = str_replace("[wrapper]", $wrapper, $out);
            $out = str_replace("[panel_id]", $panelid, $out);
            $out = str_replace("[panel_css]", $panelcss, $out);
            $out = str_replace("[filmstrip_id]", $filmstrip, $out);
            $out = str_replace("[filmstrip_css]", $filmstripc, $out);
        }
        return $out;
    }

    function footerScripts() {
        if (wp_script_is(\'jquery\', \'done\')) {
            echo "<script type=\\"text/javascript\\" defer=\\"defer\\">" . $this->bottom_javascript . "</script>";
        }
    }

我只显示了页脚脚本的函数，但没有显示任何脚本和css，因此我很确定错误的来源是相同的。

有人能告诉我哪里出了问题吗？

if ( ! is_single() ) {
    return;
}

$post = get_post();