[RESOLVED] Problem with session array

Firebird

I'm having some problems with saving a query string into an session array. The query string comes from a page where I list a lot of products in a table. I have a textbox where the user can write the quantity of the product and then I have a submit button that calls the page where I tries to save the ordered products in an session array.

<?php
session_start();

foreach ($_GET as $key => $value)
{
	if ($value != '')
	{
	$orders = array($key => $value);

print_r(array($orders));

}

}

$_SESSION['addorders']=$orders;

?>

When I print the array, alle the products are present, but when I tries to display the session array on another page it only shows me the last product :bemused:

Regards,
Firebird

david8787

In your foreach loop you are overwriting orders with every iteration. Which is why you only get the last order. If you are creating an associative array I think the code would look like this:

$orders[$key] = $value;

Firebird

Hmm, that seems to work ok, but when I return to the product page again and add more products it overwrites my session array with only the new orders...

bradgrafelman

Firebird wrote:
when I return to the product page again and add more products it overwrites my session array with only the new orders...

...which is exactly what you're telling PHP to do.

If you want to merge the new $orders array with the old $_SESSION['addorders'] array (if it exists), then do so by using a function such as [man]array_merge/man.

Firebird

I have read about using array_merge and array_push, but I'm having a hard time figure out how to place/use it in the code provided in my first post.

Help would be very appreciated

Regars,

Firebird

Weedpacket

Firebird wrote:
I have read about using array_merge and array_push, but I'm having a hard time figure out how to place/use it in the code provided in my first post.

You'd use [man]array_merge[/man] and you'd use it here:

$_SESSION['addorders']=$orders;

Firebird

I have tried different things...

$_SESSION['addorders'] = array_merge( $_SESSION['addorders'], $orders );

But I get the following error:

Warning: array_merge() [function.array-merge]: Argument #1 is not an array in C:\wamp\www\addorders.php on line 12

It's also important to notice that that I don't want the numeric keys to be enumbered like example 3 on the link you provided http://dk2.php.net/array_merge

Can anyone help me to get this to work?

Regards,
Firebird

igorek

$_SESSION['addorders'] = array(); // initialize it or default it

Firebird

Thanks, but my problem still persists. Here is what I wan't to accomplish:

When I call the page (code included below), I wan't my orders to append to the $_SESSION['addorders'] array. Each time I call the page I lose the data I had previously. It overwrites instead of appending 🙁

I have the following code:

<?php
session_start();

foreach ($_GET as $key => $value)
{
	if ($value != '')
	{
		$orders[$key] = $value;
	}
}

$_SESSION['addorders'] = array();
$_SESSION['addorders'] = $_SESSION['addorders'] + $orders;

?>

If I use:

$_SESSION['addorders'] = array_merge( $_SESSION['addorders'], $orders );

the array keys get renumbered and then my associated array is broken, and the array still overwrites instead of appending.

Regards,
Firebird

igorek

Let me know if this helps 😉

ex.

<?php
session_start();

// we does example!
$get['fname']      = 'Igor';
$get['lname']      = 'Astakhov';
$get['customerid'] = 1;
$get['order']      = ''; // empty!!

foreach ($get as $k => $v) {
    if (!empty($v)) {
        $orders[$k] = $v;
    }
}

// 1 add orders array
// 2 orders
$_SESSION['addorders'][] = $orders;

print '<pre>';
print_r($_SESSION);
print '</pre>';

?>

prints something like this:

Array
(
    [addorders] => Array
        (
            [0] => Array
                (
                    [fname] => Igor
                    [lname] => Astakhov
                    [customerid] => 1
                )

    )

)

btw you are trying to prepend a value to an array not append i think append is more to a string or a variable. Like a sql statement. Check these array functions: array_push(), array_pop(), array_shift(), array_unshift().

Firebird

Your code looks alot like mine, besides the two [][] which should be same as array_push. But when using array_push or [][] the keys in the array gets renumbered.

I solved the problem with the below function from http://php.net/manual/en/function.array-push.php

function associative_push($arr, $tmp) {
  if (is_array($tmp)) {
    foreach ($tmp as $key => $value) { 
      $arr[$key] = $value;
    }
    return $arr;
  }
  return false;
}

$theArray = associative_push($theArray, $items);

Thanks for guiding me into the right direction.

igorek

ignorant

Firebird

igorek;10954183 wrote:
ignorant

What do you mean?

I'm completely new to PHP, so please correct me if I'm wrong.

Anyway, as I already said, thank you very much for your help.

Regards,
Firebird