[RESOLVED] shopping cart help

[benracer]

i am trying to remove the id sent by the form from the cart array.

Here is the add item to session - this works and the cart displays the contents

<?php 
session_start(); 

if (count($_SESSION["cart"]) < 1) { 
    $_SESSION["cart"] = array(); 
} 

$_SESSION["cart"][] = $_POST["itemid"]; 


header("location:cart.php"); 

?> 

the carts remove item button

<form id="id" name="id" method="post" action="/remove_item.php">
       <input name="id" type="hidden" id="id" value="<? echo $info['id']; ?>" />
       <input name="Submit" type="submit" class="formbox" value="Remove" />
</form>

Then the php script that it posts to is...

<?php 
$_SESSION['cart'][] = $itemid; 
$id=$_POST['id']; 
unset($_SESSION['cart'][$id]); 
header("location:cart.php"); 

?> 

though no error is displayed and the script is receiving the id from the form???

any help would be appreciated,
cheers

[halojoy]

$SESSION["cart"][] = $POST["itemid"];

this will number like this
$SESSION["cart"][0] = $POST["itemid"];
$SESSION["cart"][1] = $POST["itemid"];
$SESSION["cart"][2] = $POST["itemid"];

So the key, name of variable, will not have $itemid.

To make the name of variable have $itemid
you use,
add_item.php

<?php

session_start();

/* I do not know what this does
If n=0 then make it empty, does not make sense to me
In order to count an array, it has to exist
and if number of things in this array is = 0
then it is already an empty array = array()
if (count($_SESSION["cart"]) < 1) {
    $_SESSION["cart"] = array();
} */

// i might use this, if this what you want
// if there is no such array, make one empty
if ( !isset( $_SESSION["cart"] ) ) {
    $_SESSION["cart"] = array();
}

$id = $_POST["itemid"];
$_SESSION["cart"][$id] = $id;

header("location:cart.php");

?> 

Then deleting would work

<form id="id" name="id" method="post" action="/remove_item.php"> 
<input name="id" type="hidden" id="id" value="<?php echo $info['id']; ?>" />
<input name="Submit" type="submit" class="formbox" value="Remove" />
</form>

i changed to this line:
<input name="id" type="hidden" id="id" value="<?php echo $info['id']; ?>" />

... and this to do it, remove_item.php

<?php

session_start(); // MUST BE, in any page using $_SESSION

$id=$_POST['id'];
unset($_SESSION['cart'][$id]);

header("location:cart.php");

?> 

[benracer]

🙂 --

[benracer]

Thanks i got this working now.
just a quick one..

i used this to check if the session cart exists-

<?php
session_start();
if(!session_is_registered('cart'))
{
header("location:cart_empty.php");
}
?>

how could i make it so if there are no items left in the array it will delete the complete the session?

thank you
Ben

[benracer]

Thanks to you all 🙂