Classic ASP – IN ARRAY
Function InArray(Needle, Haystack)
Dim i, x
InArray = False
For i = 0 To Ubound(Haystack)
If IsArray(Needle) = True Then
For x = 0 To Ubound(Needle)
If Trim(Haystack(i)) = Trim(Needle(x)) Then
InArray = True
Exit Function
End If
Next
Else
If Trim(Haystack(i)) = Trim(Needle) Then
InArray = True
Exit Function
End If
End If
Next
End Function
SOURCE: https://gist.github.com/gwobcke/1044367