计算一个字符串在另一字符串中出现的次数函数

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Function strnum(patrn, strng)
Dim regEx, Match, Matches,xx
xx=0
Set regEx = New RegExp
regEx.Pattern = patrn
regEx.IgnoreCase = True ' 设置是否区分大小写。
regEx.Global = True
Set Matches = regEx.Execute(strng)
For Each Match in Matches
xx=xx+1
Next
strnum = xx
End Function

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