세선ID : lnjeh0bs81vsahg79djbvahl8k
session1 :
Warning: Undefined array key "session1" in /users/2016/i1658051/public_html/2019/webprog/ch10/exam10-07.php on line 14

session2 :
Warning: Undefined array key "session2" in /users/2016/i1658051/public_html/2019/webprog/ch10/exam10-07.php on line 15

session3 :
Warning: Undefined array key "session3" in /users/2016/i1658051/public_html/2019/webprog/ch10/exam10-07.php on line 16

세션설정
세션확인
세션변수 session1 삭제
세션삭제