Session Variables How Many?

[Barkster]

I'm wanting to store about 6 fields one of which could have about 1600
characters in a session variables for submitting data to the database.
I'm trying to elimate partial records being inserted into the database
when a user quits in the middle of an entry. Is there a limit to the
size of what you can put in sessions and number of session you want to
limit on a server. Didn't know if you had a high volume site that if
you stored new records in sessions, how that would affect performance.
I thought about using cookies but not everyone has them enabled, I
guess I could check first. Any suggestions on this? Thanks

[Andy Jeffries]

On Thu, 30 Mar 2006 07:49:46 -0800, Barkster wrote:

I'm wanting to store about 6 fields one of which could have about 1600
characters in a session variables for submitting data to the database. I'm
trying to elimate partial records being inserted into the database when a
user quits in the middle of an entry. Is there a limit to the size of
what you can put in sessions and number of session you want to limit on a
server. Didn't know if you had a high volume site that if you stored new
records in sessions, how that would affect performance. I thought about
using cookies but not everyone has them enabled, I guess I could check
first. Any suggestions on this? Thanks

AFAIK there's no limit to either (by default) size of session or number of
sessions. They're stored in files, so I guess it could be limited by a
number of files in a folder or disk space, but that's it.

If you wanted you could register your own session handler that worked any
way you want.

Cheers,
Andy

--
Andy Jeffries MBCS CITP ZCE | gPHPEdit Lead Developer
http://www.gphpedit.org | PHP editor for Gnome 2
http://www.andyjeffries.co.uk | Personal site and photos

[Barkster]

Good to know, I thought they were in the memory of the server. Could
you give me an example of building my own handler? Thanks

[Andy Jeffries]

On Thu, 30 Mar 2006 08:45:35 -0800, Barkster wrote:

Good to know, I thought they were in the memory of the server. Could you
give me an example of building my own handler? Thanks

PHP MySQL Session Handler example:
http://www.daniweb.com/code/snippet43.html

http://uk2.php.net/session_set_save_handler

It's not too bad if you use auto_prepend to prepend a global file that
defines stuff like that (or you always include the same include at the top
of every file).

Cheers,
Andy
--
Andy Jeffries MBCS CITP ZCE | gPHPEdit Lead Developer
http://www.gphpedit.org | PHP editor for Gnome 2
http://www.andyjeffries.co.uk | Personal site and photos

[Barkster]

Appreciate the info on that

[Richard Levasseur]

FYI: Unless you pass around the session ID using GET, sessions store
the value in a cookie.

[Andy Jeffries]

On Thu, 30 Mar 2006 19:16:58 -0800, Richard Levasseur wrote:

FYI: Unless you pass around the session ID using GET, sessions store the
value in a cookie.

That should read "sessions store the value (of the session ID) in a
cookie". They don't store the session values in a cookie.

Cheers,
Andy

--
Andy Jeffries MBCS CITP ZCE | gPHPEdit Lead Developer
http://www.gphpedit.org | PHP editor for Gnome 2
http://www.andyjeffries.co.uk | Personal site and photos