Hello all.
I am looking for some ideas on how to design / structure a script
which checks for updates on files on a existing CD ROM.
Every week, I generate content for a CD ROM containing a large number
of html pages and PDF files (the CD is distributed to 20 - 30 dealers
for ours) . The PHP script which is doing this is outputting a ZIP
compressed archive. This ZIP file is then unpacked and burned on a
CD. I am now playing with the idea to provide a "check-for-updates"
function on the CD. Because the ZIP archives are rather large in size
(300 MB), I am not able to keep all ZIP files. One or two months back
is ok. My idea is to have a db table on MySQL containing checksums
for all files of the archive and have a script that is able to
compare those lists. (one ZIP archive has about 400 - 500 files)
My idea is:
On the CD's start page I could have a link like: http://myserver.com/
look_for_updates.php?myArchiveName=2006-11-10
The script will then compare checksums for the files included in the
archive "2006-11-10" and checksums for the recent file list. It then
outputs a new ZIP file including new and updated files. Do you think
that there is another (more elegant) way for doing this? Keep in mind
that a ZIP file contains about 400-500 files which means that the
table would grow rapidly week by week. In only one year the table
would contain roughly 25000 rows of data.
/frank
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