ASP常用函数整理

获取用户真实IP函数

程序代码
'获取用户真实IP函数
Function GetIP()
GetIP = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
If GetIP = "" Then GetIP = Request.ServerVariables("REMOTE_ADDR")
End Function

获取完整地址栏地址

程序代码
'获取完整地址栏地址
Function GetUrl()
GetUrl="http://"&Request.ServerVariables("SERVER_N ... .ServerVariables("URL")
If Request.ServerVariables("QUERY_STRING")<>"" Then GetURL=GetUrl&"?"& Request.ServerVariables("QUERY_STRING")
End Function

获取本页文件名

程序代码
'获取本页文件名
Function SelfName()
SelfName = Mid(Request.ServerVariables("URL"),InstrRev(Request.ServerVariables("URL"),"/")+1)
End Function

获取文件后缀名

程序代码
'获取文件后缀名
Function GetExt(filename)
GetExt = Mid(filename,InstrRev(filename,".")+1)
End Function

求字符串长度

程序代码
'求字符串长度函数
Function GetLength(str)
Dim i,length
For i = 1 to Len(str)
If Asc(Mid(str,i,1))<0 or Asc(Mid(str,i,1))>256 Then
length = length+2
Else
length = length+1
End If
Next
GetLength = length
End Function

过滤不良字符

程序代码
'过滤不良字符
Function ChkBadWords(fString)
Dim BadWords,bwords,i
BadWords = "这里是不良词语|竖线分隔"
If Not(IsNull(BadWords) or IsNull(fString)) Then
bwords = Split(BadWords, "|")
For i = 0 to UBound(bwords)
fString = Replace(fString, bwords(i), string(Len(bwords(i)),"*"))
Next
ChkBadWords = fString
End If
End Function

防止外部提交

程序代码
'防止外部提交
Function ChkPost()
Dim URL1,URL2
ChkPost = False
URL1 = Cstr(Request.ServerVariables("HTTP_REFERER"))
URL2 = Cstr(Request.ServerVariables("SERVER_NAME"))
If Mid(URL1,8,Len(URL2))=URL2 Then ChkPost = True
End Function

过滤HTML字符

程序代码
'过滤HTML字符函数
Function HTMLEncode(fString)
If Not IsNull(fString) And fString <> "" Then
fString = Replace(fString, ">", ">")
fString = Replace(fString, "<", "<")
fString = Replace(fString, Chr(32), " ")
fString = Replace(fString, Chr(9), " ")
fString = Replace(fString, Chr(34), """)
fString = Replace(fString, Chr(39), "'")
fString = Replace(fString, Chr(13), "")
fString = Replace(fString, Chr(10) & Chr(10), "</P><P>")
fString = Replace(fString, Chr(10), "<BR>")
fString = Replace(fString, Chr(255), " ")
HTMLEncode = fString
End If
End Function

清除HTML标记

程序代码
'清除HTML标记
Function stripHTML(strHTML)
Dim objRegExp,strOutput
Set objRegExp = New Regexp
objRegExp.IgnoreCase = True
objRegExp.Global = True
objRegExp.Pattern = "<.+?>"
strOutput = objRegExp.Replace(strHTML,"")
strOutput = Replace(strOutput, "<","<")
strOutput = Replace(strOutput, ">",">")
stripHTML = strOutput
Set objRegExp = Nothing
End Function