/**
* NUpload::connect - Connect NUpload to the specified upload handler
* @param string $handler the class name of the upload handler
* @return null
*/
public static function connect($handler)
{
if (getenv('UPLOAD_PREFIX')) {
self::$prefix = getenv('UPLOAD_PREFIX');
}
if (!class_exists($handler)) {
throw new Exception("Upload handler class doesn't exist", 1);
}
$handler = new $handler();
if (!$handler instanceof NUpload) {
throw new Exception("Upload handler is not instance of NUpload: {$handler}", 1);
}
self::$handler = $handler;
if (method_exists($handler, 'init')) {
call_user_func(array(self::$handler, "init"), null);
}
}
