'Alexander Lehmann', 'email' => 'alexlehm@gmail.com', 'date' => '2026-01-03', 'name' => 'Google Tag Manager Plugin', 'desc' => 'Plugin to embed Google Tag Manager in your wiki.', 'url' => 'https://wiki.lehmann.cx/projects:dokuwiki_gtm', ); } /** * Register its handlers with the DokuWiki's event controller */ public function register(Doku_Event_Handler $controller) { $controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'addHeaders'); } public function addHeaders(&$event, $param) { $GTMID = $this->getConf(self::GTMID); if (!$GTMID) return; $is_AW_tag = substr($GTMID, 0, 3) == 'AW-'; if ($is_AW_tag) { $event->data['script'][] = array ( 'src' => "https://www.googletagmanager.com/gtag/js?id=" . $GTMID, ); $event->data['script'][] = array ( 'type' => 'text/javascript', '_data' => "window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);}" . " gtag('js', new Date()); gtag('config', '" . $GTMID . "');", ); } else { $event->data['noscript'][] = array ( '_data' => '', ); $event->data['script'][] = array ( 'type' => 'text/javascript', '_data' => "(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','" . $GTMID . "');", ); } } }