chamilo | Script to download all files from courses on Chamilo | Learning library

This error appears because somehow the PHP version is not 7.2 (but rather <5.5) in the context in which you are executing the page.

Since PHP 5.5, the emty() function was changed to support function results. See http://php.net/manual/en/function.empty.php Note: Prior to PHP 5.5, empty() only supports variables; anything else will result in a parse error. In other words, the following will not work: empty(trim($name)). Instead, use trim($name) == false.

My guess is the place where you change the PHP version in your control panel doesn't affect (or didn't affect yet) the place where Chamilo is being loaded. Ask your hosting provider, maybe?

You can place a "info.php" file with the following content at the root of Chamilo and load it directly through the browser. This will tell you what version PHP is running at in the Chamilo directory:

Chamilo 1.* does not have a feature to create new roles from the interface. If you want to do that, you will have to do some (PHP) programming.

This is, for several reasons, one of the features that Chamilo does not provide, and the reason why you already have about 14 different roles (look at roles constants definitions in main/inc/lib/api.lib.php) predefined with the basic software.

Chamilo 2.0 (the roadmap plans for a first release this year) will offer the underlying elements to enable granular roles and permissions definitions, but it will not directly offer the feature to final users and is not ready for production use yet.

I would recommend you check the definitions of roles in the admin guide (https://docs.chamilo.org/) and try to find something that roughly fits what you need.

Obviously, you could also pick another LMS software that offers granular roles and permissions management, but you would probably loose the ease of use which is Chamilo's main advantage.

-edit-

You can assign only about 5 roles when creating a new user. Other roles are cumulative and can be added only in context: inside courses or sessions (course assistant is for users inside the users list inside a course, session general coach is the teacher you assign as general coach when creating a session, ...).

The anonymous role is a role assigned to users when they do not have a user account.

Are you just looking for some example queries to the SQL database, like these ones? https://docs.moodle.org/33/en/ad-hoc_contributed_reports#User_and_Role_Report