Function: Update Dozent Options

Function: Get the pages

Function: Determine if passed value is an array, if array, count that array, compatible with php > 7

Function: Determine if the application is in debug mode

Function: Get all course levels available in the Dozent LMS

Filter Hook: Filter the course levels

Function: Check if a plugin is activated

Function: Return array value by given key, Get array key by dot notation

Function: Get all of the given array except for a specified array of keys.