要在Excel公式中直接使用正则表达式，以下UDF(用户自定义函数)可能会有所帮助。它或多或少直接将正则表达式功能暴露为excel函数。

它是如何工作的

它需要2-3个参数。

要对其使用正则表达式的文本。 正则表达式。 指定结果外观的格式字符串。它可以包含$0、$1、$2等等。$0是整个匹配，$1及以上分别对应正则表达式中的匹配组。默认为$0。

一些例子

提取电子邮件地址:

=regex("Peter Gordon: some@email.com, 47", "\w+@\w+\.\w+")
=regex("Peter Gordon: some@email.com, 47", "\w+@\w+\.\w+", "$0")

结果:some@email.com

提取几个子字符串:

=regex("Peter Gordon: some@email.com, 47", "^(.+): (.+), (\d+)$", "E-Mail: $2, Name: $1")

搜索结果:E-Mail: some@email.com，姓名:Peter Gordon

将单个单元格中的组合字符串分解为多个单元格中的组件:

=regex("Peter Gordon: some@email.com, 47", "^(.+): (.+), (\d+)$", "$" & 1)
=regex("Peter Gordon: some@email.com, 47", "^(.+): (.+), (\d+)$", "$" & 2)

结果:彼得·戈登some@email.com…

如何使用

要使用此UDF，请执行以下操作(大致基于此Microsoft页面)。他们有一些很好的附加信息!)

In Excel in a Macro enabled file ('.xlsm') push ALT+F11 to open the Microsoft Visual Basic for Applications Editor. Add VBA reference to the Regular Expressions library (shamelessly copied from Portland Runners++ answer): Click on Tools -> References (please excuse the german screenshot) Find Microsoft VBScript Regular Expressions 5.5 in the list and tick the checkbox next to it. Click OK. Click on Insert Module. If you give your module a different name make sure the Module does not have the same name as the UDF below (e.g. naming the Module Regex and the function regex causes #NAME! errors). In the big text window in the middle insert the following: Function regex(strInput As String, matchPattern As String, Optional ByVal outputPattern As String = "$0") As Variant Dim inputRegexObj As New VBScript_RegExp_55.RegExp, outputRegexObj As New VBScript_RegExp_55.RegExp, outReplaceRegexObj As New VBScript_RegExp_55.RegExp Dim inputMatches As Object, replaceMatches As Object, replaceMatch As Object Dim replaceNumber As Integer With inputRegexObj .Global = True .MultiLine = True .IgnoreCase = False .Pattern = matchPattern End With With outputRegexObj .Global = True .MultiLine = True .IgnoreCase = False .Pattern = "\$(\d+)" End With With outReplaceRegexObj .Global = True .MultiLine = True .IgnoreCase = False End With Set inputMatches = inputRegexObj.Execute(strInput) If inputMatches.Count = 0 Then regex = False Else Set replaceMatches = outputRegexObj.Execute(outputPattern) For Each replaceMatch In replaceMatches replaceNumber = replaceMatch.SubMatches(0) outReplaceRegexObj.Pattern = "\$" & replaceNumber If replaceNumber = 0 Then outputPattern = outReplaceRegexObj.Replace(outputPattern, inputMatches(0).Value) Else If replaceNumber > inputMatches(0).SubMatches.Count Then 'regex = "A to high $ tag found. Largest allowed is $" & inputMatches(0).SubMatches.Count & "." regex = CVErr(xlErrValue) Exit Function Else outputPattern = outReplaceRegexObj.Replace(outputPattern, inputMatches(0).SubMatches(replaceNumber - 1)) End If End If Next regex = outputPattern End If End Function Save and close the Microsoft Visual Basic for Applications Editor window.

我不想启用一个参考库，因为我需要我的脚本是可移植的。Dim foo作为新的VBScript_RegExp_55。RegExp行导致了User Defined Type Not Defined错误，但我找到了一个适合我的解决方案。

更新RE评论w/ @chrisneilsen:

I was under the impression that enabling a reference library was tied to the local computers settings, but it is in fact, tied directly to the workbook. So, you can enable a reference library, share a macro enabled workbook and the end user wouldn't have to enable the library as well. Caveat: The advantage to Late Binding is that the developer does not have to worry about the wrong version of an object library being installed on the user's computer. This likely would not be an issue w/ the VBScript_RegExp_55.RegExp library, but I'm not sold that the "performance" benifit is worth it for me at this time, as we are talking imperceptible milliseconds in my code. I felt this deserved an update to help others understand. If you enable the reference library, you can use "early bind", but if you don't, as far as I can tell, the code will work fine, but you need to "late bind" and loose on some performance/debugging features.

来源:https://peltiertech.com/Excel/EarlyLateBinding.html

您要做的是在单元格A1中放置一个示例字符串，然后测试您的strPattern。一旦工作，调整然后rng按需要。

Public Sub RegExSearch()
'https://stackoverflow.com/questions/22542834/how-to-use-regular-expressions-regex-in-microsoft-excel-both-in-cell-and-loops
'https://wellsr.com/vba/2018/excel/vba-regex-regular-expressions-guide/
'https://www.vitoshacademy.com/vba-regex-in-excel/
    Dim regexp As Object
    'Dim regex As New VBScript_RegExp_55.regexp 'Caused "User Defined Type Not Defined" Error
    Dim rng As Range, rcell As Range
    Dim strInput As String, strPattern As String
    
    Set regexp = CreateObject("vbscript.regexp")
    Set rng = ActiveSheet.Range("A1:A1")
        
    strPattern = "([a-z]{2})([0-9]{8})"
    'Search for 2 Letters then 8 Digits Eg: XY12345678 = Matched

    With regexp
        .Global = False
        .MultiLine = False
        .ignoreCase = True
        .Pattern = strPattern
    End With

    For Each rcell In rng.Cells

        If strPattern <> "" Then
            strInput = rcell.Value

            If regexp.test(strInput) Then
                MsgBox rcell & " Matched in Cell " & rcell.Address
            Else
                MsgBox "No Matches!"
            End If
        End If
    Next
End Sub

下面是一个regex_subst()函数。例子:

=regex_subst("watermellon", "[aeiou]", "")
---> wtrmlln
=regex_subst("watermellon", "[^aeiou]", "")
---> aeeo

下面是简化的代码(至少对我来说更简单)。我不知道如何使用上面的例子来构建一个合适的输出模式:

Function regex_subst( _
     strInput As String _
   , matchPattern As String _
   , Optional ByVal replacePattern As String = "" _
) As Variant
    Dim inputRegexObj As New VBScript_RegExp_55.RegExp

    With inputRegexObj
        .Global = True
        .MultiLine = True
        .IgnoreCase = False
        .Pattern = matchPattern
    End With

    regex_subst = inputRegexObj.Replace(strInput, replacePattern)
End Function

为那些赶时间的人扩展patszim的答案。

Open Excel workbook. Alt+F11 to open VBA/Macros window. Add reference to regex under Tools then References and selecting Microsoft VBScript Regular Expression 5.5 Insert a new module (code needs to reside in the module otherwise it doesn't work). In the newly inserted module, add the following code: Function RegxFunc(strInput As String, regexPattern As String) As String Dim regEx As New RegExp With regEx .Global = True .MultiLine = True .IgnoreCase = False .pattern = regexPattern End With If regEx.Test(strInput) Then Set matches = regEx.Execute(strInput) RegxFunc = matches(0).Value Else RegxFunc = "not matched" End If End Function The regex pattern is placed in one of the cells and absolute referencing is used on it. Function will be tied to workbook that its created in. If there's a need for it to be used in different workbooks, store the function in Personal.XLSB

这不是一个直接的答案，但可能会为你提供一个更有效的选择。这就是谷歌表有几个内置的正则表达式函数，这些可以非常方便，并帮助绕过Excel中的一些技术程序。显然，在个人电脑上使用Excel有一些优势，但对于大多数用户来说，谷歌表格将提供相同的体验，并可能在文档的可移植性和共享方面提供一些好处。

他们提供

REGEXEXTRACT:根据正则表达式提取匹配的子字符串。

REGEXREPLACE:使用正则表达式将文本字符串的一部分替换为不同的文本字符串。

替换:用字符串中的新文本替换现有文本。

REPLACE:用不同的文本字符串替换文本字符串的一部分。

你可以像这样直接把这些输入到单元格中，然后生成你想要的任何东西

=REGEXMATCH(A2, "[0-9]+")

它们也可以很好地与其他函数组合，如IF语句，如下所示:

=IF(REGEXMATCH(E8,"MiB"),REGEXEXTRACT(E8,"\d*\.\d*|\d*")/1000,IF(REGEXMATCH(E8,"GiB"),REGEXEXTRACT(E8,"\d*\.\d*|\d*"),"")

希望这为那些对Excel的VBS组件感到畏惧的用户提供了一个简单的解决方案。

我需要使用它作为一个单元格函数(如SUM或VLOOKUP)，并发现它很容易:

Make sure you are in a Macro Enabled Excel File (save as xlsm). Open developer tools Alt + F11 Add Microsoft VBScript Regular Expressions 5.5 as in other answers Create the following function either in workbook or in its own module: Function REGPLACE(myRange As Range, matchPattern As String, outputPattern As String) As Variant Dim regex As New VBScript_RegExp_55.RegExp Dim strInput As String strInput = myRange.Value With regex .Global = True .MultiLine = True .IgnoreCase = False .Pattern = matchPattern End With REGPLACE = regex.Replace(strInput, outputPattern) End Function Then you can use in cell with =REGPLACE(B1, "(\w) (\d+)", "$1$2") (ex: "A 243" to "A243")