解释一下下面vbscript的语句是什么意思0thenimgsize=request.TotalBytesimgdata=request.BinaryRead(imgsize)hcrlf=chrB(13)&chrB(10)divider=leftB(imgdata,clng(instrB(imgdata,hcrlf))-1)dstart=instrB(imgdata,chrB(13)&chrB(10)&chrB(13)&chrB(10))

Question

解释一下下面vbscript的语句是什么意思
0 then
imgsize=request.TotalBytes
imgdata=request.BinaryRead(imgsize)
hcrlf=chrB(13)&chrB(10)
divider=leftB(imgdata,clng(instrB(imgdata,hcrlf))-1)
dstart=instrB(imgdata,chrB(13)&chrB(10)&chrB(13)&chrB(10))+4
dend=instrB(dstart+1,imgdata,divider)-dstart
mydata=midB(imgdata,dstart,dend)
session("mydata")=mydata
response.Clear()
response.Write "上传成功!"
end

Answer 1

这是一段提取上传文件的代码,