/**
* Count our plugins (but only once) by counting the top level folders in the
* mu-plugins dir. If it's more or less than last time, update the cache.
*/
private function countPlugins()
{
if (isset(self::$count)) {
return self::$count;
}
$count = count(glob(WPMU_PLUGIN_DIR . '/*/', GLOB_ONLYDIR | GLOB_NOSORT));
if (!isset(self::$cache['count']) || $count != self::$cache['count']) {
self::$count = $count;
$this->updateCache();
}
return self::$count;
}