How to implement access control in PHP?

@hal.littel 

Access control in PHP can be implemented using various methods, such as:

1. Role-Based Access Control (RBAC) - This method involves assigning roles to users and then granting access permissions based on these roles.
2. Access Control Lists (ACL) - With ACL, you can create a list of users and the actions they can perform on certain resources.
3. Session-based Access Control - This method involves establishing a user session and then granting access permissions based on user authentication and authorization.
4. Permission-based Access Control - This method entails defining permissions for each resource on the server and then checking whether a user has the necessary permission to access that resource.

To implement access control in PHP, you will need to do the following:

1. Define your access control rules, either using RBAC, ACL, session-based access control, or permission-based access control.
2. Write the necessary PHP code to implement your chosen access control mechanism.
3. Assign roles and permissions to users as necessary.
4. Test your access control system thoroughly to ensure that it is working as intended.