Course completion

There are several states of completion of the course

1. Completion is turned off
2. Completion is turned on
3. Without any criteria
4. With one or more criteria(s)
5. Course is completed

Settings→Course administration→Edit settings Completion tracking → 'Disabled, not shown in activity settings'

Database(DB): table 'mdl_course' field 'enablecompletion' is 0

Settings→Course administration→Edit settings Completion tracking → 'Enabled, control via…..'

DB: table 'mdl_course' field 'enablecompletion' is 1

DB: table 'mdl_course_completion_criteria' does not contain any records with 'course' = [concrete course id]

DB: table 'mdl_course_completion_criteria' contains record(s) with 'course' = [concrete course id]

DB: table 'mdl_course_completions' field 'timecompleted' != NULL

via php code:

$params = array(
    'userid' => $user_id,
    'course' => $course_id
);
$ccompletion = new completion_completion($params);
$ccompletion->is_complete();