excel vba count instances of substring
'VBA functions to count the occurrnces of a substring in a string.
'Choose your function flavor:
'Small and Slow:
Function InStrCount&(s1$, s2$, Optional Compare As VbCompareMethod = vbBinaryCompare)
If Len(s1) Then If Len(s2) Then InStrCount = UBound(Split(s1, s2, , Compare))
End Function
'Super Fast (3 times faster than the above function):
Function InStrCount&(s1$, s2$, Optional ByVal Start& = 1, Optional Compare As VbCompareMethod = vbBinaryCompare)
Dim s2L&
If Compare = vbBinaryCompare Then
s2L = LenB(s2)
If s2L Then
Start = InStrB(Start, s1, s2)
Do While Start
InStrCount = InStrCount + 1
Start = InStrB(Start + s2L, s1, s2)
Loop
End If
Else
InStrCount = InStrCount(LCase$(s1), LCase$(s2), Start)
End If
End Function
'------------------------------------------------------------------------------
MsgBox InStrCount("oAooBoCooDo", "oo") '<--displays: 2