Re: Get List of courses and roles

From the Moodle version 2.5.1 onwards, you can use these following function to get course(s):

• Get a specific course with ID:
  

$course = get_course($course_id);

• Get all courses:
  

$courses = get_courses();

Read the Moodle's Data Manipulation API for more information: 

http://docs.moodle.org/dev/Data_manipulation_API