[thelist] PHP help wanted & fonts tip
Alex Bainbridge
alex.bainbridge at travelucd.com
Mon Oct 28 07:23:25 CST 2002
Hi all,
I am afraid to say that the example Jay just gave re connection time
calculations is not correct.
To correctly calculate download time:
1) Remember file size is in bytes, connection speed is in bits
2) 1 kilobit = 1000 bits
1 kilobyte = 1024 bytes
1 byte = 8 bits
So,
>If you want to code in PHP then you can get the file size and divide it by
>known connection speeds. So if you have a file that is 86Kb;
>28Kbps connection - 3.07 seconds
>33Kbps connection - 2.61 seconds
86 kilobyte file is the same as 88,064 bytes
then multiply by 8 to get bits, which is equal to 704,512 bits
28.8 Kbps connection = 28,800 bits per second
Divide 704,512 by 28,800 you get 24 seconds.... which is not quite the same
as 3 seconds as Jay pointed out earlier...
As Jay correctly points out, this is theoretical speed.
kind regards
alex
http://www.travelucd.com
More information about the thelist
mailing list