Hey Stefan,
Please take another look at Step 14.
Having built a constructor in 'class person' in your class_lib.php file,
and both a set_name and get_name method,
it seems to me totally redundant, even though it will work, to place the set_name or
get_name method in your echo call back to the class.
Rather than
echo "Stefan's full name :" . $stefan->get_name();
The proper syntax would be:
echo "Stefan's full name: $stefan->name;
Would it not?