세션ID : bf3dc4ddd6a44ba9a09f96dd337fab31
session :
Warning: Undefined array key "session1" in /users/2019/i1919069/public_html/2022/WebProg/ch10/exam10-06.php on line 13

session :
Warning: Undefined array key "session2" in /users/2019/i1919069/public_html/2022/WebProg/ch10/exam10-06.php on line 14

session :
Warning: Undefined array key "session3" in /users/2019/i1919069/public_html/2022/WebProg/ch10/exam10-06.php on line 15

세션설정
세션확인
모든세션변수삭제
세션삭제