What are the best practices for managing network share access in PHP applications when trust relationships are dissolved?

When trust relationships are dissolved, it is important to ensure that only authorized users have access to network shares in PHP applications. One of the best practices for managing network share access is to implement role-based access control (RBAC) to restrict access based on user roles and permissions. This can be achieved by checking the user's role before allowing access to the network share.

// Check user's role before allowing access to network share
$userRole = getUserRole(); // Function to get user's role

if($userRole == 'admin'){
    // Allow access to network share
    // Code to access network share goes here
} else {
    // Deny access to network share
    echo "You do not have permission to access this network share.";
}