[Nirjonadda]

Yes i am using mysqli. This config.php file get vB 4.2.2 File upload but before i am using mysql.

//	****** DATABASE TYPE ******
	//	This is the type of the database server on which your vBulletin database will be located.
	//	Valid options are mysql and mysqli, for slave support add _slave.  Try to use mysqli if you are using PHP 5 and MySQL 4.1+
	// for slave options just append _slave to your preferred database type.
$config['Database']['dbtype'] = 'mysqli';