How to store two variables in a session

[michibk]

Hi there,
i got it - to store one variable in a session
(the id's of items) with:

$_Session['item'] etc., the I work with serialize and unserialize to aggregate new values. All is stored in a string. How can I store two variables in an array? Saying
the item id and the quantity? How would be the code?

Thanks

Micke

[dannys]

How about:

$_SESSION['item']=Array('id'=>123,'quantity'=>2);

Or, if you want to handle multiple 'items'

$_SESSION['item'][]=Array('id'=>123,'quantity'=>2);
$_SESSION['item'][]=Array('id'=>564,'quantity'=>6);
$_SESSION['item'][]=Array('id'=>878,'quantity'=>9);
$_SESSION['item'][]=Array('id'=>198,'quantity'=>1);

HTH

Danny.

[jayant]

If you have "register_globals" on, use session_register(), session_unregister(),... etc.

If you are using $HTTP_SESSION_VARS/$_SESSION and disable register_globals, do not use session_register().

else you can simply use for registering session variable:
session_start();

<?
session_start();
// Use $HTTP_SESSION_VARS with PHP 4.0.6 or less
if (!isset($_SESSION['count'])) {
    $_SESSION['count'] = 0;
} else {
    $_SESSION['count']++;
?>

For unregistering a sessiong variable:

<?
session_start();
unset($_SESSION['count']);
?>

[waygood]

Just treat $_SESSION as you would a normal variable, it just has the extra ability to be kept within a session. BUT only if you keep the session alive, like the first post by Jayant, using session_start();

so normally you would use :-

$mydata['items']['item_id'] = "b00001";
$mydata['items']['qty']=4;

just change $mydata to $_SESSION

multiple items would be :-

$SESSION['items'][0]['item_id'] = "khsdf";
$SESSION['items'][0]['qty'] = 6;
$SESSION['items'][1]['item_id'] = "kfdsg";
$SESSION['items'][1]['qty'] = 3;

also see the array functions section on phpbuilder if you want to learn more about manipulating arrays here

[Tremor]

I'm having a sort-of-related issue, and I thought the above would help me, because I had been using $HTTP_SESSION_VARS and session_register and unregister on PHP 4.2.2... I switched over to $SESSION, and things seem to run a little smoother, but...

I'm having trouble getting it to make one specific value persistent. I've currently got two session vars set up, a string and an int. I've got a session_start at the top of every page. It keeps the string fine, but the int seems to only be there intermittently - the rest of the time it's null, but isset returns true. All of this is in the global scope, not inside of a function. The same code did work at some point, but I can't see anything I've changed that could be causing this. Any ideas what's going on?

<?php
session_start();
require_once('neo.lib.php');
$s_uid = $_SESSION['NEO_UID'];
echo $s_uid . "; " . $_SESSION['NEO_UID'] . "; " . $_SESSION['NICK'] . "; ";
if (($_SESSION['NEO_UID'] = "") || (!isset($_SESSION['NEO_UID']))) {
	header("Location: http://sandbox.neoporia.net/");
}	
$tid = $HTTP_POST_VARS['tid'];	
mysql_select_db($database_neodb, $neodb);
$insertSQL = sprintf("INSERT INTO message (`to`,`from`,`time`,`subject`,`body`,`type`) VALUES (%s,%s,%s,%s,%s,%s)",
	GetSQLValueString($tid,"int"),
	GetSQLValueString($_SESSION['NEO_UID'],"int"),
	GetSQLValueString("NOW()","func"),
	GetSQLValueString($HTTP_POST_VARS['subject'],"text"),
	GetSQLValueString($HTTP_POST_VARS['body'],"text"),
	GetSQLValueString("forum","text"));

echo $insertSQL . "; " . $_SESSION['NEO_UID'] . "; " . $s_uid . "; ";
$Result1 = mysql_query($insertSQL, $neodb) or die(mysql_error());
$pid = mysql_insert_id($neodb);

Neo_Log($HTTP_SERVER_VARS['REMOTE_ADDR'],$_SESSION['NEO_UID'],$HTTP_SERVER_VARS['HTTP_REFERER'],$PHP_SELF, "forum_post", "POST_REPLY," . $pid . "," . $tid);

$insertGoTo = "/thread_view.php?tid=" . $tid;
header(sprintf("Location: %s", $insertGoTo));

Gives this output:

1; 1; tremor; INSERT INTO message (to,from,time,subject,body,type) VALUES (2,NULL,NOW(),'test','test','forum'); ; 1; Column 'from' cannot be null

If I retry it, I get:

; ; tremor; INSERT INTO message (to,from,time,subject,body,type) VALUES (2,NULL,NOW(),'test','test','forum'); ; ; Column 'from' cannot be null

What am I doing wrong?

[dannys]

if (($_SESSION['NEO_UID'] = "") || (!isset($_SESSION['NEO_UID']))) {
    header("Location: http://sandbox.neoporia.net/");
}  

Should be

if (($_SESSION['NEO_UID'] == "") || (!isset($_SESSION['NEO_UID']))) {
    header("Location: http://sandbox.neoporia.net/");
}  

[waygood]

Don't now how the GetSQLValueString function works or why you are building the query in that way but shouldn't you be using %d or %u for the integer values
OR
change GetSQLValueString($_SESSION['NEO_UID'],"int") to "text"

$insertSQL = sprintf("INSERT INTO message (to, from, time, subject, body, type) VALUES (%s,%u,%s,%s,%s,%s)",
    GetSQLValueString($tid,"int"),
    GetSQLValueString($_SESSION['NEO_UID'],"int"),
    GetSQLValueString("NOW()","func"),
    GetSQLValueString($HTTP_POST_VARS['subject'],"text"),
    GetSQLValueString($HTTP_POST_VARS['body'],"text"),
    GetSQLValueString("forum","text"));

Are you a C-programmer??
Why are you creating variables where they are not needed.

$insertGoTo = "/thread_view.php?tid=" . $tid;
header(sprintf("Location: %s", $insertGoTo));

// change to 
header("Location: /thread_view.php?tid=" . $tid);

[Tremor]

Ahhhh, thank you so much... it was the if statements that were derailing everything else... the problem with knowing a few languages is, when you're coding, you don't know which of the ones you know is similar to the one you're actually using 😉

Thanks for the help!