What are common issues when trying to delete articles from a PHP shopping cart system?

Common issues when trying to delete articles from a PHP shopping cart system include incorrect item identification, improper handling of session variables, and missing validation checks. To solve these issues, ensure that the item to be deleted is correctly identified, update the session variables to reflect the removal of the item, and implement validation checks to prevent errors. 

<?php
session_start();

// Check if item ID is provided
if(isset($_GET['item_id'])) {
    $item_id = $_GET['item_id'];

    // Check if item exists in cart
    if(isset($_SESSION['cart'][$item_id])) {
        // Remove item from cart
        unset($_SESSION['cart'][$item_id]);
        echo "Item successfully deleted from cart.";
    } else {
        echo "Item not found in cart.";
    }
} else {
    echo "Item ID not provided.";
}
?>

Keywords

SQL injection database transactions foreign key constraints error handling PHP sessions

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