检测整数和长整数的ASP函数

<%

'检测字符串是否是整数

Function Is_Int(a_str)

If not isnumeric(a_str) or len(a_str) > 5 Then

Is_Int = false

Exit Function

Elseif len(a_str) < 5 then

Is_Int = true

Exit Function

End if

If cint(left(a_str , 4)) > 3276 Then

Is_Int = false

Exit Function

Elseif cint(left(a_str , 4)) = 3276 And cint(right(a_str , 1)) > 7 Then

Is_Int = false

Exit Function

Else

Is_Int = true

Exit Function

End if

End Function

'检测是否是长整数

Function Is_Lng(a_str)

If not isnumeric(a_str) or len(a_str) > 10 Then

Is_Lng = false

Exit Function

Elseif len(a_str) < 10 Then

Is_Lng = true

Exit Function

End If

If clng(left(a_str , 9)) > 214748367 Then

Is_Lng = false

Exit Function

Elseif clng(left(a_str , 9)) = 214748367 And clng(right(a_str , 1)) > 7 Then

Is_Lng = false

Exit Function

Else

Is_Lng = true

Exit Function

End If

End Function

%>