几个比较好用的asp检查函数

因为比较简单，我就不说什么了。一看就明白的！
Function ChkStr(InString)
If InString<>"" Then
InString=Replace(LCase(InString)," ","")
InString=Replace(LCase(InString),";","")
InString=Replace(LCase(InString),"'","")
InString=Replace(LCase(Instring),"--","")
Instring=Replace(LCase(Instring),"%","")
InString=Replace(LCase(InString),"%20","")

InString=Replace(LCase(InString),"admin","")

InString=Replace(LCase(InString),"and","")
InString=Replace(LCase(InString),"or","")

InString=Replace(LCase(InString),"asc","")
InString=Replace(LCase(Instring),"chr","")
InString=Replace(LCase(InString),"mid","")
InString=Replace(LCase(InString),"len","")

InString=Replace(LCase(InString),"select","")
InString=Replace(LCase(InString),"insert","")
InString=Replace(LCase(InString),"delete","")
InString=Replace(LCase(InString),"update","")


ChkStr=InString
End If
End Function
Function CheckFileExt(FileExt)
Dim FileAccessExt,AccessExt
AccessExt="gif,jpg,jpeg,bmp,doc,txt,png"
FileAccessExt=Split(AccessExt,",")
For i=LBound(FileAccessExt) to UBound(FileAccessExt)
If LCase(FileExt)=LCase(FileAccessExt(i)) Then
CheckFileExt=True
Else
CheckFileExt=False
End If
Next
End Function
Function CheckStr(str,IsStr)
CheckStr=str
If IsStr And InStr(str,",")>0 Then
Call errmsg("提交字符中包含非法字符")
ElseIf (Not IsStr) And (Not IsNumeric(str)) Then