Session Vars

[rcoursey]

Is there a limit to the number of session variables? If so how many?

I notice most use $_SESSION to call session vars. If you have multiple session vars which one is accessed?

Thanks

[darkke]

I don't think there's a limit on how many $_SESSION vars you can have, but you would call the variables like so:

$_SESSION['name_of_variable'];

In other words, if you have set a session variable called 'user_name', you would call it like:

$_SESSION['user_name'];

Since $_SESSION is an array, if you wanted to see all the variables, you could do:

foreach($_SESSION as $key => $val)    {
    echo "$key: $val"; 
}

[rcoursey]

What if you registered multiple session variables.

ie SESSION_REGISTER(usrdtls, otherdtls)
where usrdtsl and otherdtls are array type.

then assigned values to each array to be tracked by the session.

What does the call $_SESSION lead to?

[darkke]

A call to $_SESSION without the key returns only 'Array'.
If you have a session variable that is an array itself (like in your example), you would access it like any multidimensional array.

$_SESSION['usrdtls']=array("var1","var2","var3");

echo $_SESSION['usrdtls'][0]; //prints "var1" 
echo $_SESSION['usrdtls'][1]; //prints "var2"
echo $_SESSION['usrdtls'][2]; //prints "var3"

Note the use of $_SESSION['var']="value" rather than session_register(). This is so that the script will run with REGISTER_GLOBALS set to off.

[rcoursey]

Another item/s with sesions:
I am seeming to have difficulty getting the info assigned to the session vars. Or at least getting them to follow the user to different pages.

An example:
$session_var[uname] = $l->uname;
$session_var[fname] = $l->first_name;
$session_var[userid] = $l->userid;
$session_var[mtype] = $l->membertype;
$session_var[loggedin] = 1;

On the next page I try to access the mtype index and come up with a blank. I access it like this:

if ($session_var[mtype] < 2)
{
header("Location: login.php?mode=purchase");
}

Even though I know I am registering I am being thrown into the the login again.

[darkke]

Are you trying to set session variables directly with
$session_var[mtype]=$l->membertype; ?

the correct syntax should be
$_SESSION['mtype']=$l->membertype;

If you created a different array called "$session_var", then you are trying to call the session variable from a standard array and not the session array.

[rcoursey]

The $session_var is registered to the session:

session_start();
if (!session_is_registered('session_var'))
{
session_register('session_var');
$session_var= array('uname' => 'unknown', 'userid' => '0', 'mtype' => '0', 'loggedin' => '0');
}

I noticed you used single quotes. Is this necessary always? Or just when assigning variables to the array?

[khurramijaz]

Same as the limit of items in an array.

[minorgod]

Do yourself a favor and view your session variables with the following code...it handles multiple dimensions and will format the output so you can see the various levels of nesting....

echo "<pre>";
print_r($_SESSION);
echo "</pre>";