Adding element to session array

[Trilogen]

Trying to create a little shopping cart from scratch for a domain search shopping cart.

if (isset($_POST['domainadd']))
{
$domain = $_POST['domainadd'];
$_SESSION['cart'][] = $domain;
}

Can anyone show an example how to add an element to a session array?

[saraadmin]

There are tons on the docs page on session functions.

Your code will probably work if you remove the extra [] operator from:
$_SESSION['cart'] = $domain;

Although you can store complex objects in $_SESSION variables, think about trying to use simple strings and numbers in preference where you can.

[Trilogen]

But I'm trying to make it an array. So when user post's another item to 'cart' it will be added to the end of the array.

[saraadmin]

Does:

if (isset($_POST['domainadd'])) 
{ 
    $domain = $_POST['domainadd'];
    $cart = $_SESSION['cart'];
    $cart[] = $domain;
    $_SESSION['cart'] = $cart; 
}

work?

You may need to make sure the $SESSION['cart'] is initially assigned an array; maybe even an empty one ($SESSION['cart'] = array()) to make sure it knows its supposed to be an array...

[Trilogen]

OK it appears to be working. I think the problem also had to do with the way I printed the array.

I was using:

for($j=0;$j<count($session['cart']);$j++){
print "<tr><td>" . $session['cart'])[$j] . "</td></tr>";
}
print("</table>");
}

Instead of this which was the correct way:

for($j=0;$j<count($cart);$j++){
print "<tr><td>" . $cart[$j] . "</td></tr>";
}
print("</table>");
}

[saraadmin]

Oh, good.

Don't forget that PHP provides the foreach construct for simplified array iteration:

foreach ($cart as $item)
{
    print "<tr><td>$item</td></tr>";
}

[Trilogen]

I added a way to remove Items in the cart by printing it this way.

if ($cart){
print("<table border=2 width=200>");
for($j=0;$j<count($cart);$j++){
print "<tr><td>". $cart[$j] ."<a href=$PHP_SELF?DID=$j&DMN=$domain><span class=style7>[remove]</span></a></td></tr>";
}
print("</table>");
}

For some reason it only prints [remove] and not the value of the element.

Although I tried your foreach method and it printed the values of the elements. Although then there won't be a way to identify which element to delete without a counter like $j. As you can see in href I added DID=$j which at the top of my script there is

if ($_GET['DID']){
$element = $_GET['DID'];
unset($cart[$element]);
$domain = $_GET['DMN'];
}

to remove the element from the array.

What do you suggest?

[Trilogen]

Ok I managed to print the values and count each element in the array with this

$i=0;
foreach ($cart as $item)
{
    print "<tr><td>$item<a href=$PHP_SELF?DID=$i&DMN=$domain><span class=style7>[remove]</span></a></td></tr>";
$i++;
}
print("</table>");

But now the problem is it will not delete these elements once I clicked the [remove] link

It just reloads the page without any changes.

This is what I have at the top of my script.

<?
session_start();

if (isset($_POST['domainadd']))  

{  

    $domain = $_POST['domainadd']; 
    $cart = $_SESSION['cart']; 
    $cart[] = $domain; 
    $_SESSION['cart'] = $cart;  

    $domain = substr($_POST['domainadd'],0,-4);
}


if ($_GET['DID']){
$element = $_GET['DID'];
unset($cart[$element]);
$domain = $_GET['DMN'];
}

[saraadmin]

Two things:

1) You don't really need $PHP_SELF in your href; and you should use quotes to make it better HTML:

print "<tr><td>$item<a href=\"?DID=$i&DMN=$domain\"><span class=\"style7\">[remove]</span></a></td></tr>";

2) Try using:

if (isset($_GET['DID']))

try adding some debugging code to print the value of DID when the script loads; and try using:

$element = intval($_GET['DID']);

though I'm not sure it will solve the problem.