Session Array Issue

ledtear

ok - so I have:

if(!isset($SESSION['cou'])) {
$SESSION['cou'] = array();
}

and

<?print sizeof($_SESSION['cou'])?>

The problem is that when I keep hitting refresh on the page this code is on, about the second time i hit refresh, the sizeof turns to 1 instead of 0? I try to print out $_SESSION['cou'][0] but there is nothing there - it seems to be creating a member for some reason.... should this be happening?

homer09001

where it turns to 1 its statng that there is 1 value in that array or session variable

see:

http://uk.php.net/manual/en/function.count.php

count() and sizeof()
are the same

ledtear

I am still not sure why 1 would be returned by simply hitting refersh twice - and then only be returned as 1... I am not adding a memeber to the array - it should still be empty and count should continue to return 0, right?

homer09001

ill try to explain when the session variable COU is not set then sizeof($_SESSION['cou']) does not exist there for sizeof returns its size as 0 then when you set it by refreshing the page you are adding a value to the session variable there for it has a value of 1 e.g. 1 value

so basicaly as with all programming 0 = False/not set and 1 = True/set

following now?

ledtear

forgive my ignorance... when I use sizeof($_SESSION['cou']) I was hoping to get a count of how many members the array has, not a true/false output...

given my original code:

if(!isset($SESSION['cou'])) {
$SESSION['cou'] = array();
}

and

<?print sizeof($_SESSION['cou'])?>

What should I be using to have the second bit return 0 until I actually add a member to the array?

homer09001

at the moment array() has not value!

i ran your code and got 1 everytime, you need to add each value of the array like i have below

<?

if(isset($_SESSION['cou'])) { 
$_SESSION['cou'] = array(a,b,c,D,e,g); 
}

?>

<?print sizeof($_SESSION['cou'])?>

ledtear

ok - maybe it is starting to seap through my thick skull... so when I say sizeof($_SESSION['cou']) it is giving me the size of the SESSION VARIABLE.... thus a 0/1... that makes sense now... what I need is the size of the array that is in the session? How would i get that? That's what has been throwing me off - I need the size of the array....

homer09001

re read my above post i changed it whilst you posted.

and yeah you pretty much got it 😃

ledtear

AUU!U!! that takes me back to my original code... I want to create an empty array and then add to it... which is why I did:

if(!isset($SESSION['cou'])) {
$SESSION['cou'] = array();
}

and

<?print sizeof($_SESSION['cou'])?>

So if I do create it as an empty array ($_SESSION['cou'] = array(); [perhaps this is not valid) how can I get the array count instead of the 1 [that it is set]... thanks for your time....

homer09001

http://uk.php.net/function.array

leatherback

you said yourself:

[man]count[/man]

Weedpacket

ledtear wrote:
The problem is that when I keep hitting refresh on the page this code is on, about the second time i hit refresh, the sizeof turns to 1 instead of 0?

After adding enough code to make something that would run I get the expected behaviour: 0 0 0 0 .... Could you post a complete script - as short as possible - that shows the problem?

I try to print out $_SESSION['cou'][0] but there is nothing there

Try using [man]print_r[/man] or one of the other variable-dumping debugging functions; then you won't have to guess what it might be called.

should this be happening?

No, and like I said, Works For Me.

Of course, if you're just going to be adding to the array once it's created,

$_SESSION['cou'][] = "something";

is legal even if $_SESSION['cou'] doesn't already exist.

leatherback

Weedpacket wrote:
Of course, if you're just going to be adding to the array once it's created,
$_SESSION['cou'][] = "something";
is legal even if $_SESSION['cou'] doesn't already exist.

Is it? I thought you'd have to initialize it as an array? It gives warnings when I run these things without verifying...

Weedpacket

I wasn't 100% sure after you said that. But I double checked, and rechecked php.ini to make sure it was still E_ALL, and nope - no notices about uninitialised variables.

Even "<?php $foo['bar']['baz'][] = 42; ?>" runs without issue.