ASP开发中有用的函数（function）集合(1)

ASP开发中有用的function集合,挺有用处的！希望大家保留！

<%
'*************************************
'防止外部提交
'*************************************
function ChkPost()
dim server_v1,server_v2
chkpost=false
server_v1=Cstr(Request.ServerVariables("HTTP_REFERER"))
server_v2=Cstr(Request.ServerVariables("SERVER_NAME"))
If Mid(server_v1,8,Len(server_v2))<>server_v2 then
    chkpost=False
else
   chkpost=True
end If
end function

'*************************************
'IP过滤
'*************************************
function MatchIP(IP)
on error resume next
MatchIP=false
Dim SIp,SplitIP
for each SIp in FilterIP
    SIp=replace(SIp,"*","\d*")
    SplitIP=split(SIp,".")
    Dim re, strMatchs,strIP
     Set re=new RegExp
      re.IgnoreCase =True
      re.Global=True
      re.Pattern="("&SplitIP(0)"|).""("&SplitIP(1)"|).""("&SplitIP(2)"|).""("&SplitIP(3)"|)"
     Set strMatchs=re.Execute(IP)
      strIP=strMatchs(0).SubMatches(0) & "." & strMatchs(0).SubMatches(1)& "." & strMatchs(0).SubMatches(2)& "." & strMatchs(0).SubMatches(3)
     if strIP=IP then MatchIP=true:exit function
     Set strMatchs=Nothing
     Set re=Nothing
next
end function

'*************************************
'获得注册码
'*************************************
Function getcode()
    getcode= "<img src=""common/getcode.asp"" alt="""" style=""margin-right:40px;""/>"
End Function

'*************************************
'限制上传文件类型
'*************************************
Function IsvalidFile(File_Type)
    IsvalidFile = False
    Dim GName
    For Each GName in UP_FileType
        If File_Type = GName Then
            IsvalidFile = True
            Exit For
        End If
    Next
End Function

'*************************************
'检测是否只包含英文和数字
'*************************************
Function IsValidChars(str)
    Dim re,chkstr
    Set re=new RegExp
    re.IgnoreCase =true
    re.Global=True
    re.Pattern="[^_\.a-zA-Z\d]"
    IsValidChars=True
    chkstr=re.Replace(str,"")
    if chkstr<>str then IsValidChars=False
    set re=nothing
End Function

'*************************************
'检测是否只包含英文和数字
'*************************************
Function IsvalidValue(ArrayN,Str)
    IsvalidValue = false
    Dim GName
    For Each GName in ArrayN
        If Str = GName Then
             IsvalidValue = true
            Exit For
        End If
    Next
End Function

'*************************************
'检测是否有效的数字
'*************************************
Function IsInteger(Para)
    IsInteger=False
    If Not (IsNull(Para) Or Trim(Para)="" Or Not IsNumeric(Para)) Then
        IsInteger=True
    End If
End Function

'*************************************
'用户名检测
'*************************************
Function IsValidUserName(byVal UserName)
    on error resume next
    Dim i,c
    Dim VUserName
    IsValidUserName = True
    For i = 1 To Len(UserName)
        c = Lcase(Mid(UserName, i, 1))
        If InStr("$!<>?#^%@~`&*();:+='""　   ", c) > 0 Then
                IsValidUserName = False
                Exit Function
        End IF
    Next
    For Each VUserName in Register_UserName
        If UserName = VUserName Then
            IsValidUserName = False
            Exit For
        End If
    Next
End Function

'*************************************
'检测是否有效的E-mail地址
'*************************************
Function IsValidEmail(Email)
    Dim names, name, i, c
    IsValidEmail = True
    Names = Split(email, "@")
    If UBound(names) <> 1 Then
        IsValidEmail = False
        Exit Function
    End If
    For Each name IN names
        If Len(name) <= 0 Then
            IsValidEmail = False
            Exit Function
        End If
        For i = 1 to Len(name)
            c = Lcase(Mid(name, i, 1))
            If InStr("abcdefghijklmnopqrstuvwxyz_-.", c) <= 0 And Not IsNumeric(c) Then
                IsValidEmail = false
                Exit Function
            End If
        Next
        If Left(name, 1) = "." or Right(name, 1) = "." Then
            IsValidEmail = false
            Exit Function
        End If
    Next
    If InStr(names(1), ".") <= 0 Then
        IsValidEmail = False
        Exit Function
    End If
    i = Len(names(1)) - InStrRev(names(1), ".")
    If i <> 2 And i <> 3 Then
        IsValidEmail = False
        Exit Function
    End If
    If InStr(email, "..") > 0 Then
        IsValidEmail = False
    End If
End Function

'*************************************
'加亮关键字
'*************************************
Function highlight(byVal strContent,byRef arrayWords)
    Dim intCounter,strTemp,intPos,intTagLength,intKeyWordLength,bUpdate
    if len(arrayWords)<1 then highlight=strContent:exit function
    For intPos = 1 to Len(strContent)
        bUpdate = False
        If Mid(strContent, intPos, 1) = "<" Then
            On Error Resume Next
            intTagLength = (InStr(intPos, strContent, ">", 1) - intPos)
            if err then
              highlight=strContent
              err.clear
            end if
            strTemp = strTemp & Mid(strContent, intPos, intTagLength)
            intPos = intPos + intTagLength
        End If
            If arrayWords <> "" Then
                intKeyWordLength = Len(arrayWords)
                If LCase(Mid(strContent, intPos, intKeyWordLength)) = LCase(arrayWords) Then
                    strTemp = strTemp & "<span class=""high1"">" & Mid(strContent, intPos, intKeyWordLength) & "</span>"
                    intPos = intPos + intKeyWordLength - 1
                    bUpdate = True
                End If
            End If
        If bUpdate = False Then
            strTemp = strTemp & Mid(strContent, intPos, 1)
        End If
    Next
    highlight = strTemp
End Function

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