How can you improve the security of your PHP code when implementing user-specific features like displaying links for admins?

To improve the security of your PHP code when implementing user-specific features like displaying links for admins, you should always validate the user's permissions before rendering any sensitive content. This can be done by checking the user's role or permissions level against a predefined list of allowed roles. By properly validating the user's permissions, you can prevent unauthorized users from accessing admin-specific features.

// Check if the user is an admin before displaying admin links
if($user->role === 'admin'){
    echo '<a href="/admin/dashboard">Admin Dashboard</a>';
}