编写asp代码截取字符串：

'函数名：SubstZFC

'作 用：截字符串，汉字一个算两个字符，英文算一个字符

'参 数：str ----原字符串

' strlen ----截取长度

'返回值：截取后的字符串

'适用：标题截取指定字符，如果用LEFT截取，当有英文时就会出现取出来的标题明显太短。

'**************************************************

Public Function SubstZFC(ByVal str, ByVal strlen)

If str = "" Then

SubstZFC = ""

Exit Function

End If

Dim l, t, c, i, strTemp

str = Replace(Replace(Replace(Replace(str, " ", " "), """, Chr(34)), ">", ">"), "<", "<")

l = Len(str)

t = 0

strTemp = str

strlen = CLng(strlen)

For i = 1 To l

c = Abs(Asc(Mid(str, i, 1)))

If c > 255 Then

t = t + 2

Else

t = t + 1

End If

If t >= strlen Then

strTemp = Left(str, i)

Exit For

End If

Next

SubstZFC = Replace(Replace(Replace(Replace(strTemp, " ", " "), Chr(34), """), ">", ">"), "<", "<")

End Function