host = '127.0.0.1';
$session ->username = 'root';
$session ->password = '111';
$session ->dbname = 'test';
//定义会话过期时间
$session ->setexpirationseconds(300);
//定义会话步骤次数
$session ->setexpirationhops(2 , 'host');
$session ->setexpirationhops(3 , 'username');
$session ->setexpirationhops(4 , 'password');
$session ->setexpirationhops(5 , 'dbname');
?>