How can PHP code be modified to prevent manipulation of item IDs by users?

To prevent users from manipulating item IDs in PHP, you can implement server-side validation to check if the user has permission to access the requested item. This can be done by verifying the user's credentials or permissions before fetching the item from the database. Additionally, you can use session variables to store the user's authenticated state and restrict access to certain item IDs based on their role or privileges. 

// Check user permissions before fetching item
if($user->hasPermission($requestedItemId)) {
    $item = getItemFromDatabase($requestedItemId);
    // Display item details
} else {
    // Display error message or redirect to unauthorized page
}

Keywords

PHP security input validation SQL injection data sanitization

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