我看不懂,请教
以下为程序代码
<%@Language="VBScript"%>
<% response.expires=0
response.buffer=true
response.clear %>
<html>
<head></head>
<body>
<%
pname=Session("pname")
ssml=Session("ssml")
motorno=Session("motorno")
kv=Session("kv")
runsj=Session("runsj")
getsj=Session("getsj")
desc=Session("desc")
formsize=request.totalbytes
formdata=request.binaryread(formsize)
bncrlf=chrB(13) & chrB(10)
divider=leftB(formdata,clng(instrb(formdata,bncrlf))-1)
datastart=instrb(formdata,bncrlf & bncrlf)+4
dataend=instrb(datastart+1,formdata,divider)-datastart
mydata=midb(formdata,datastart,dataend)
If len(mydata)<=1 then %>
<script language="javascript">
alert('请您选择该产品的图片!');
history.back(1);
</script>
<% end if %>
"""""""""""""""""
下面这些的意思是什么?
formsize=request.totalbytes
formdata=request.binaryread(formsize)
bncrlf=chrB(13) & chrB(10)
divider=leftB(formdata,clng(instrb(formdata,bncrlf))-1)
datastart=instrb(formdata,bncrlf & bncrlf)+4
dataend=instrb(datastart+1,formdata,divider)-datastart
mydata=midb(formdata,datastart,dataend)
""""""""""""""""""""""""""
谢谢