Cookies - The Random 14?

[techno_race]

I need to know how to generate a user number. For example, when a user visits a certain page on my site, they see a 14- or 10-digit (depending on the page) number with any sequence of the following 9 characters: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. I would prefer random against incrementing (for example, 7291862947, 5629857392... instad of 0000000001, 0000000002...). I could do this, but here comes the catch.
If a user visits the page, they see the number. But then if the user visits the page again 784 days later, it has the same number. Note that 784 days is just an example, it would also have the same number 4, 334 or 2,896 days later. And, a different user has a different number.

If anyone knows how to do this, please tell me right away.

[Twey]

You can't, past the time the browser keeps cookies. If the browser keeps cookies forever, that's fine: just generate it and store it in a cookie. Otherwise, however, there's no way to store it forever short of a user account system and server-side code.

[techno_race]

OK, I suppose: to keep the cookie the longest possible regarding the configuration.

Edit: Yay! This is my 100th post!

[Twey]

As I said, just generate it and store it in a cookie, and don't set an expiry date.

[techno_race]

How do I make a cookie?

[Twey]

In Javascript, all cookie data is stored in a string, document.cookie. You can use it just like any other string, except that it persists across page visits.

[boxxertrumps]

Can you create/read/destroy a JS cookie with php?
(and vice versa?)

[thetestingsite]

To my understanding, yes. I have done this in several scripts (while I was just playing around). Due to the fact that the cookie gets stored in the browser (using both PHP and JS), both can read/edit/delete these cookies (as long as you have the cookie name.

Hope this helps.

[techno_race]

I know this thread is 4 months old, but I still haven't been able to make a cookie...

Sorry, mods.

[???]

Cookies are slightly weird I think. Theres some special format. Its like
name=value;expiredate=aGMTstring;path=generaly/;
something like that. You have to read and write though. Google it. That'll give you stuff.