public function login($username, $password, $code)
{
$userverify = new UserVerify();
$flag1 = $userverify->verifyUserName($username);
$flag2 = $userverify->verifyPasswd($password);
$flag3 = $userverify->verifyCode($code);
if ($flag1 && $flag2 && $flag3) {
return true;
} else {
return false;
}
}
