PHP Shopping Cart - php

Question

I am trying to add a product to my shopping cart.
I am getting an error saying:
Warning: Invalid argument supplied for foreach() in
It is telling me I am getting an error for the following code:
function isInCart($id) {
if (!empty($_SESSION['sess_uid']['cart'])) {
foreach ($_SESSION['sess_uid']['cart'] as $report) {
if ($report['reportID'] == $id) {
// Report ID found in Cart
return true;
}
}
// Looped through cart, ID not found
return false;
} else {
// Cart empty
return false;
}
}
The particular line from the above that is flagging the error is:
foreach ($_SESSION['sess_uid']['cart'] as $report) {
I am also getting the following error message:
Fatal error: Only variables can be passed by reference in
The code this relates to is the following:
function addToCart($id) {
$report = getReportByID($id);
$author = $report['userID'];
if (!empty($report)) {
// Got the report
if (!empty($_SESSION['sess_uid']['cart'])) {
if (!isInCart($id) && !isOwner($author) && !hasPurchased($id)) {
array_push($_SESSION['sess_uid']['cart'], $report);
return true;
} else {
return false;
}
} else {
$_SESSION['sess_uid']['cart'] = array();
if (!isInCart($id) && !isOwner($author) && !hasPurchased($id)) {
array_push($_SESSION['sess_uid']['cart'], $report);
return true;
} else {
return false;
}
}
} else {
// Unable to get report by ID
return false;
}
}
The particular line of code from the above that is flagging the error is:
array_push($_SESSION['sess_uid']['cart'], $report);
The code below is what gets my reports to populate the store
<?php
function getReportByID($id) {
$conn = new mysqli(localhost, root, DBPASS, DBNAME);
$sql = "SELECT * FROM reports WHERE reportID = '" . $conn->real_escape_string($id)."';";
// Performs the $sql query on the server
$report = $conn->query($sql);
return $report->fetch_array(MYSQLI_ASSOC);
}
?>
Any help would be greatly appreciated.
Thanks

Answer 1

i think this wil help:
it typcast your session as an array so even when the session is empty you dont get an error
foreach ((array)$_SESSION['sess_uid']['cart'] as $report) {
let me know if this fix the error?