Session variables not stored

[jpawlak836]

I am currently using Apache 2.0.55 and PHP 4.4.7. I was previously using PHP 4.4.2 and upgraded to PHP 4.4.7, but I have the same problem.

I setup my app to store session information in a MySQL database (the data is stored in a column of type text).

• The user logs in and some basic information is stored in $_SESSION

• The next page or two are just UI pages that use the session variables (which DO get stored in the database)

• On the next page, a user selects info from two drop downs and submits the page

• The submitted page then uses window.open (I have also tried a header() redirect) to open a new window

It is in this pop-up that I am having trouble. Any session variables that are created within this page only exist within that page and cannot be accessed on any other page. The session variables contain information, but are not stored in the database nor are they stored in a cookie or in a session temp file.

They just plain don't exist anywhere outside of that page. It's wierd because I can still access the other session vars (which means the session is still intact), but I can't create new ones from the popup.

Does anyone have any ideas on what the problem could be?

Thanks.

[i-keng]

[FONT="Tahoma"]Before you use $_SESSION you must use

session_start();

at begin of page that you want to use session..[/SIZE][/FONT]

[jpawlak836]

session_start() is at the beginning of every page.

Since I can access some session variables, I know the session is intact.

[bradgrafelman]

1. Echo session_id() on all pages just to double check that you're getting the same session each time.

2. After you modify the session data in the pop-up, try calling [man]session_write_close/man.

Also, how are you trying to access the data? Can you describe the process that you go through (e.g. page1 sets session vars, link to page 2, page2 pops a window up, pop-up window sets session vars, user clicks link on page 2 to page 3, etc.).

[jpawlak836]

In trying to diagnose the problem, I'm carrying the session id across all the pages in the querystring and using session_id($_GET['sid']) to restore the session on each page.

I also tried session_write_close() on the previous page and the popup, but the session vars in the popup still do not get saved to the database.

Page 1 is just login and sets a session var saying that the user is logged in and another var containing the user's database name.

Page 2 supplies the user with 2 drop-downs and a submit button. When the submit button is pressed, the form is submitted to itself and window.open is echoed to open page 3.

Page 3 (problem page) sets 2 more session variables (do not get saved) and uses the previous session variables to query the db for info (which works). If I echo the 2 session vars I just created, they do work on this page.

On page 3 there is a table cell with an onclick parameter that calls a javascript function which in turns calls a php page (page 4/ajax).

Page 4 is unable to get the information from the 2 session vars created in page 3, but can access the session vars created during login.

[bradgrafelman]

Can you show us the AJAX code? Sounds like it's not passing the session id properly thus the 2 new vars are being created in a separate session.

[jpawlak836]

The session id is being passed. Both pages can access the session variables that were created during login, and I have session_start included in a header file that checks to see if the user is logged in. If they are not, they are forced to login.

function checkDivExists(cX,cY){
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null){
		alert ("Browser does not support HTTP Request");
		return;
	}
	var url="funcs.php";
	url=url+"?sid="+document.getElementById("sid").value;
	url=url+"&x="+cX;
	url=url+"&y="+cY;
	url=url+"&f=checkDiv";
	url=url+"&id="+Math.random();
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

and then funcs.php tries querying the db using one of the session vars created in page 3.