array(1 item)
   course_id => 7724 (integer)

'weiterbildung' (13 chars)

'qualification' (13 chars)

array(3 items)
   weiterbildung => '159' (3 chars)
   retraining => '25' (2 chars)
   coaching => '1368' (4 chars)

'159' (3 chars)

'qualification' (13 chars)