ASP函数集
作者:admin 日期:2006-07-08
这里是一个完整的PDF格式的ASP函数集
点击下载此文件1.'判断文件名是否合法
<%
Function isFilename(aFilename)
Dim sErrorStr,iNameLength,i
isFilename=TRUE
sErrorStr=Array("/","\",":","*","?","""","<",">","|")
iNameLength=Len(aFilename)
If iNameLength<1 Or iNameLength=null Then
isFilename=FALSE
Else
For i=0 To 8
If instr(aFilename,sErrorStr(i)) Then
isFilename=FALSE
End If
Next
End If
End Function
%>
2.去掉字符串头尾的连续的回车和空格
<%
function rtrimVBcrlf(str)
dim pos,isBlankChar
pos=len(str)
isBlankChar=true
while isBlankChar and pos>=2
if mid(str,pos,1)=" " then
pos=pos-1
elseif mid(str,pos-1,2)=VBcrlf then
pos=pos-2
else
isBlankChar=false
end if
wend
rtrimVBcrlf=rtrim(left(str,pos))
end function
%>
3.去掉字符串开头的连续的回车和空格
<%
function ltrimVBcrlf(str)
dim pos,isBlankChar
pos=1
isBlankChar=true
while isBlankChar
if mid(str,pos,1)=" " then
pos=pos+1
elseif mid(str,pos,2)=VBcrlf then
pos=pos+2
else
isBlankChar=false
end if
wend
ltrimVBcrlf=right(str,len(str)-pos+1)
end function
%>
4.判断Email是否有效,返回1表示正确
<%
Function isEmail(aEmail)
Dim iLocat,v,iLength,i,checkletter
If instr(aEmail,"@") = 0 Or instr(aEmail,".") = 0 Then
isEmail=0
EXIT FUNCTION
End If
iLocat=instr(aEmail,"@")
If instr(iLocat,aEmail,".")=0 Or instr(iLocat+1,aEmail,"@")>0 Then
isEmail=0
EXIT FUNCTION
End If
If left(aEmail,1)="." Or right(aEmail,1)="." Or left(aEmail,1)="@" Or right(aEmail,1)="@" Then
isEmail=0
EXIT FUNCTION
End If
v="1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-.@"
iLength=len(aEmail)
For i=1 To iLength
checkletter=mid(aEmail,i,1)
If instr(v,checkletter)=0 Then
isEmail=0
EXIT FUNCTION
End If
Next
isEmail=1
End Function
%>
5.用HTML格式显示文本
<%
function HTMLEncode(fString)
if not isnull(fString) then
fString = replace(fString, ">", ">")
fString = replace(fString, "<", "<")
fString = Replace(fString, CHR(32), " ")
fString = Replace(fString, CHR(34), """)
fString = Replace(fString, CHR(39), "'")
fString = Replace(fString, CHR(13), "")
fString = Replace(fString, CHR(10) & CHR(10), "
")
fString = Replace(fString, CHR(10), "
")
HTMLEncode = fString
end if
end function
%>
6.检查邮件
<%
Function CheckEmail(strEmail)
Dim re
Set re = New RegExp
re.Pattern = "^[\w-\.]{1,}\@([\da-zA-Z-]{1,}\.){1,}[\da-zA-Z-]{2,3}$"
re.IgnoreCase = True
CheckEmail = re.Test(strEmail)
End Function
%>
7.检查无效字符
<%
Function CheckStr(byVal ChkStr)
Dim Str:Str=ChkStr
Str=Trim(Str)
If IsNull(Str) Then
CheckStr = ""
Exit Function
End If
Dim re
Set re=new RegExp
re.IgnoreCase =True
re.Global=True
re.Pattern="(\r\n){3,}"
Str=re.Replace(Str,"$1$1$1")
Set re=Nothing
Str = Replace(Str,"'","''")
Str = Replace(Str, "select", "select")
Str = Replace(Str, "join", "join")
Str = Replace(Str, "union", "union")
Str = Replace(Str, "where", "where")
Str = Replace(Str, "insert", "insert")
Str = Replace(Str, "delete", "delete")
Str = Replace(Str, "update", "update")
Str = Replace(Str, "like", "like")
Str = Replace(Str, "drop", "drop")
Str = Replace(Str, "create", "create")
Str = Replace(Str, "modify", "modify")
Str = Replace(Str, "rename", "rename")
Str = Replace(Str, "alter", "alter")
Str = Replace(Str, "cast", "cast")
CheckStr=Str
End Function
%>
8.转换HTML代码
<%
Function HTMLEncode(reString)
Dim Str:Str=reString
If Not IsNull(Str) Then
Str = UnCheckStr(Str)
Str = Replace(Str, "&", "&")
Str = Replace(Str, ">", ">")
Str = Replace(Str, "<", "<")
Str = Replace(Str, CHR(32), " ")
Str = Replace(Str, CHR(9), " ")
Str = Replace(Str, CHR(9), " ")
Str = Replace(Str, CHR(34),""")
Str = Replace(Str, CHR(39),"'")
Str = Replace(Str, CHR(13), "")
Str = Replace(Str, CHR(10), "
")
HTMLEncode = Str
End If
End Function
%>
9.脏字过滤功能
<%
Function DelDirty(str)
str=replace(str,"妈的","MD")
str=replace(str,"靠","KAO")
DelDirty=str
End Function
%>
10.获取IP地址
<%
Function Userip()
Dim GetClientIP
'如果客户端用了代理服务器，则应该用ServerVariables("HTTP_X_FORWARDED_FOR")方法
GetClientIP = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
If GetClientIP = "" or isnull(GetClientIP) or isempty(GetClientIP) Then
'如果客户端没用代理，应该用Request.ServerVariables("REMOTE_ADDR")方法
GetClientIP = Request.ServerVariables("REMOTE_ADDR")
end if
Userip = GetClientIP
End function
%>
11.判断数字是否整形
<%
function isInteger(para)
on error resume next
dim str
dim l,i
if isNUll(para) then
isInteger=false
exit function
end if
str=cstr(para)
if trim(str)="" then
isInteger=false
exit function
end if
l=len(str)
for i=1 to l
if mid(str,i,1)>"9" or mid(str,i,1)<"0" then
isInteger=false
exit function
end if
next
isInteger=true
if err.number<>0 then err.clear
end function
%>
12.得到浏览器目前的URL
<%
Function GetCurURL()
If Request.ServerVariables("HTTPS") = "on" Then
GetCurrentURL = "https://"
Else
GetCurrentURL = "http://"
End If
GetCurURL = GetCurURL & Request.ServerVariables("SERVER_NAME")
If (Request.ServerVariables("SERVER_PORT") <> 80) Then GetCurURL = GetCurURL & ":" & Request.ServerVariables("SERVER_PORT")
GetCurURL = GetCurURL & Request.ServerVariables("URL")
If (Request.QueryString <> "") Then GetCurURL = GetCurURL & "?" & Request.QueryString
End Function
%>
13.测试变量是否为空值
<%
Function IsBlank(ByRef Var)
IsBlank = False
Select Case True
Case IsObject(Var)
If Var Is Nothing Then IsBlank = True
Case IsEmpty(Var), IsNull(Var)
IsBlank = True
Case IsArray(Var)
If UBound(Var) = 0 Then IsBlank = True
Case IsNumeric(Var)
If (Var = 0) Then IsBlank = True
Case Else
If Trim(Var) = "" Then IsBlank = True
End Select
End Function
%>
14.用于取代request.Form,request.QueryString
<%
Function SafePost(objForm)
Dim strContent
strContent = Trim(Request.Form(objForm))
strContent = Replace(strContent,"""","")
strContent = Replace(strContent,"'","")
SafePost = strContent
End function
Function SafeGet(objForm)
Dim strContent
strContent = Trim(Request.QueryString(objForm))
strContent = Replace(strContent,"""","")
strContent = Replace(strContent,"'","")
SafeGet = strContent
End function
%>
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