Maintaining Sessions In Php

[crippen]

I'm trying to maintain some session variables across pages in php.

 

Does it make a difference if the variables are stored across pages wehre I go back and forth between "www" and without?

 

What I mean is, if I store some strings into session variables using a page called "****/pagename.php", then if I link the user to "www.****/page2.php" would that cause those session variables to be lost?

[surefire]

Shouldn't be lost. With cookies I've noticed that it really depends on how you set the cookie, and that there is a way to make it work whether www or not.

 

php.net is a great resource on these kinds of questions. The user input is really a goldmine.

[TCH-Tim]

Shouldn't be lost.

Second that. Why, are you having problems?

[crippen]

I was helping someone else with this issue. Actually the variables were being passed in the URL string in a non-www URL, and going to a URL with www, we thought that may be the problem. Just wondering if anyone here might be able to confirm if that is the case.

 

For example, going from http--domainDotcom/file.php?col=bl&img=default&c=4&i=1 and then go to http--wwwDotdomainDotcom/file.php returns all empty strings from session vars.

[crippen]

some testing around I've done proves that yes, switching to a hard-coded link to a "www" URL when you are coming from a URL that does not have "www" drops the session values. SessionID is in fact retained, but the values held in session are lost!

 

Try it out here: renkai.com

Edited February 20, 2006 by crippen

[surefire]

A session is a type of cookie. As I said:

 

With cookies I've noticed that it really depends on how you set the cookie, and that there is a way to make it work whether www or not.

 

php.net is a great resource on these kinds of questions.

 

A little research and I've solved your problem:

 

>$url = 'yoursite.com';// leave off www and http:// !!!!!!

session_set_cookie_params(0,'/', '.'.$url,'');

session_start();

 

I have tested on my own server.