PHP if statement multiple conditions

I can find plenty of resources on how to include multiple conditions, but not with a session variable.

So this is my code which is working.  I need to allow this page to be viewed by only two people with member id of 88 and 89.

So if I use this code:

if ($_SESSION[Memberid] != "88") {
header("Location: home.php");
}

It works fine for allowing the one person.  It sends anyone with any other memberid to a home page.

Now, I want to add access for someone with the id of 89. So I tried:

if (($_SESSION[Memberid] != "88") || ($_SESSION[Memberid] != "89")) {
header("Location: wholesale-home.php");
}

Which doesnt work. Any help would be appreciated for this php noob.