}
}
+ # keep either login or logout parts depending on user level
+ global $User;
+ $hideclass = empty($User) ? 'login' : 'logout';
+ $doc = preg_replace('{\s*<(p|li|span) class="'.$hideclass.'">.*?</\1>}s', '', $doc);
+
return preg_replace_callback(
'{ (?<! <!--BLOCK: ) \[\[ ([^] ]+) ([^]]*) \]\] }x',
function ($sub) use ($blocks) {