/**
* Remove instance or whole class from cache or wipe cache out
*
* If $class and $id are given only instance is removed
* If only $class is given all instances of the class are removed
* If none of $class and $id are given all instances of all classes are removed
*
* @param string $class class name
* @param mixed $id unique identifier
*
* @return bool tells if instance/class was registered
*/
public static function purgeCache($class = null, $id = null)
{
if ($class) {
if (!array_key_exists($class, self::$objectCache)) {
return false;
}
if ($id) {
if (!array_key_exists($id, self::$objectCache[$class])) {
return false;
}
unset(self::$objectCache[$class][$id]);
} else {
self::$objectCache[$class] = array();
}
} else {
self::$objectCache = array();
}
return true;
}