<%
'创建多级目录，可以创建不存在的根目录
'参数：要创建的目录名称，可以是多级
'返回逻辑值，True成功，False失败
'创建目录的根目录从当前目录开始
'---------------------------------------------------
Function CreateMultiFolder(ByVal CFolder)
Dim objFSO, PhCreateFolder, CreateFolderArray, CreateFolder
Dim i, ii, CreateFolderSub, PhCreateFolderSub, BlInfo
BlInfo = False
CreateFolder = CFolder
On Error Resume Next
Set objFSO = Server.CreateObject("Scripting.FileSystemObject")
If Err Then
Err.Clear()
Exit Function
End If
CreateFolder = Replace(CreateFolder, "", "/")
If Left(CreateFolder, 1) = "/" Then
CreateFolder = Right(CreateFolder, Len(CreateFolder) -1)
End If
If Right(CreateFolder, 1) = "/" Then
CreateFolder = Left(CreateFolder, Len(CreateFolder) -1)
End If
CreateFolderArray = Split(CreateFolder, "/")
For i = 0 To UBound(CreateFolderArray)
CreateFolderSub = ""
For ii = 0 To i
CreateFolderSub = CreateFolderSub & CreateFolderArray(ii) & "/"
Next
PhCreateFolderSub = Server.MapPath(CreateFolderSub)
If Not objFSO.FolderExists(PhCreateFolderSub) Then
objFSO.CreateFolder(PhCreateFolderSub)
End If
Next
If Err Then
Err.Clear()
Else
BlInfo = True
End If
CreateMultiFolder = BlInfo
End Function
%>

使用方法：

<% Response.Write CreateMultiFolder("/upload/2006/11/11/") &"<br>" %>

函数的返回值为True(成功)或False(失败，可能是主机不支持FSO功能)