by Daniel M (8 Submissions)
Category: Coding Standards
Compatability: VB Script
Difficulty: Beginner
Date Added: Wed 3rd February 2021
Rating: 
(3 Votes)
Updated version of IsIP function. Should clear up all the problems in the last one. Here ya go, =)
VBcodersPrivate Function IsIP(strIP As String) As Boolean
Dim splitIP() As String, i As Long
IsIP = True 'Starts out as true
splitIP$ = Split(strIP$, ".", -1, 1) 'Split IP To check value
'========================================
'Things we must check to verify IP
'1. Make sure there are 4 sections to IP
'2. Make sure each section of IP is not
' greater than 255
'3. Make sure each section of IP does
' not t contain a negative
'4. Make sure each section of IP is nume-
' ric
'5. Make sure first section of IP is not
' 0
'=======================================
If UBound(splitIP$) <> 3 Then
IsIP = False 'make sure there is only 4 nodes =)
Else
For i = 0 To UBound(splitIP$) 'loop through array and check 3 things
If IsNumeric(splitIP(i)) = False Then
IsIP = False
Exit For
Else
If splitIP(0) = 0 Then 'first digit cannot be 0
IsIP = False
Exit For
End If
If splitIP(i) > 255 Or splitIP(i) < 0 Then
IsIP = False
Exit For
End If
End If
Next i
End If
End Function
