[RESOLVED] Submitting Variable to Session

[Amplifier]

Hi there, and thanks in advance for taking a look at this problem. I have a form which I want to submit a variable to a session array. The form action targets a file called addToCart.php (this is for a shopping cart, woo) which contains this code:

<?php 
	session_start();

$prod = $_POST['pid'];

if(!isset($_SESSION['cart'])) {
	$_SESSION['cart']=array();
}

if (isset($_SESSION['cart'][$prod])) {
	$_SESSION['cart'][$prod]++;
}
else {
	$_SESSION['cart'][$prod] = 1;
}

header("Location:".$_SERVER['HTTP_REFERER']);

?>

Originally the variable was sent to this file as part of a URL in an href attribute, using $prod = $_GET['pid']; so I thought it would simply be a matter of changing it to POST, being the metod of the form calling the file and pid being the name of the input tag in it..

Anyway, when I try this I receive
Fatal error: Cannot increment/decrement overloaded objects nor string offsets in addToCart.php on line 11
And I don't understand this, since I expected the variable $prod to be exactally the same.
Actually I'm not sure the original way worked either, but I don't have the file to check now. Anyway, thanks for your time 🙂

[bradgrafelman]

Are you perhaps storing other data in this array somewhere else in a different script? I coped your code and it worked fine for me.

Try commenting out the line with the increment operator and instead doing a [man]var_dump/man on $_SESSION['cart']. Disable the redirect so you can see what the script is outputting and paste it here for us to see.

[Amplifier]

You were probably right, but before I could test it I restarted my computer and magically fixed it :rolleyes: Thanks for your help anyway, there's a lot to go in this assignment so I'll probably need more of it in the future! 😃