Ive starting using Pear cache_lite(). Works great for maintaining stuff between page refreshes. You
can set the retention time to anything reasonable.
tedd wrote:
At 12:34 PM -0700 5/17/08, James Colannino wrote:
Hey everyone! I'm very new to PHP, and had a somewhat general
question (forgive me if it's too broad in scope.) Basically, I'd like
to be able to have a single PHP application that remembers its state
as users click on links. When the user clicks on a link, though, the
user unavoidably re-requests the URL from the web server, which forces
the PHP application to reload. I'm therefore uncertain as to how I
should keep the program in a state in which it remembers things like
login information when the users have to click on links in order to
navigate the application.
This is especially an issue for me when it comes to maintaining things
like persistent connections to SQL servers.
Thanks!
James
James:
There are several ways to do what you want. You can store your variables
in:
1. A $_SESSION variable;
2. A $_COOKIE variable;
3. A $_POST variable;
4. A $_GET variable;
5. A field in MySQL dB;
However, all (1-5) of those via php will require a page refresh to send
them on to the next page and for the next page to read them in again.
IOW, to read back in the variables in whatever form.
6. If you use javascript, then you can use your variables (client-side)
and then send them to php when you're ready to use them server-side --
of course that's after validation and it again requires a page refresh.
7. You can combine ajax (javascript with a "behind the scenes"
communication with the server) and php to produce a page that doesn't
refresh, but the page keeps it's state.
However, with (6-7) your web page will require javascript to be turned
ON by the user and a significant number of users (~10%) don't have js
turned ON.
So there are several ways, but each has it's trade-offs.
Cheers,
tedd
PS: Gang -- if I have missed one, please jump in and correct me.
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