function rex_addStatEntry($params)
 {
     global $REX, $REX_ARTICLE;
     $content = $params['subject'];
     $aid = (int) $REX_ARTICLE->getValue("article_id");
     if ($REX['STATS'] == 1) {
         $log = new stats();
         $log->writeLog($aid);
     }
     return $content;
 }
<?php

$mypage = "stats";
// only for this file
include_once $REX[INCLUDE_PATH] . "/addons/{$mypage}/classes/class.stats.inc.php";
if (!$REX[GG]) {
    // only backend
    // CREATE LANG OBJ FOR THIS ADDON
    $I18N_STATS = new i18n($REX[LANG], $REX[INCLUDE_PATH] . "/addons/{$mypage}/lang/");
    $REX[ADDON][rxid][$mypage] = "7";
    // unique redaxo addon id
    $REX[ADDON][page][$mypage] = "{$mypage}";
    $REX[ADDON][name][$mypage] = $I18N_STATS->msg("stats_title");
    $REX[ADDON][perm][$mypage] = "stats[]";
    $REX[PERM][] = "stats[]";
} else {
    $log = new stats();
    $log->writeLog($article_id + 0);
}
// backend and frontend
$REX[ADDON][tbl][log][$mypage] = "rex_7_log";
// wir noch nicht benutzt