How can dependencies between different user permissions be effectively programmed and implemented in a PHP-based rights management system?

To handle dependencies between different user permissions in a PHP-based rights management system, you can create a system where certain permissions are only granted if specific other permissions are already assigned to the user. This can be achieved by checking for the presence of required permissions before granting access to certain functionalities.

// Check if the user has both 'edit_posts' and 'delete_posts' permissions before granting 'manage_posts' permission
if (in_array('edit_posts', $userPermissions) && in_array('delete_posts', $userPermissions)) {
    $userPermissions[] = 'manage_posts';
}