세션ID : qrb5bb4m1k6ofqjuigfqp4oib1
session1 :
Warning: Undefined array key "session1" in /users/2000/i0058041/public_html/webprog/Session/showSession.php on line 10

session2 :
Warning: Undefined array key "session2" in /users/2000/i0058041/public_html/webprog/Session/showSession.php on line 11

session3 :
Warning: Undefined array key "session3" in /users/2000/i0058041/public_html/webprog/Session/showSession.php on line 12

session1 삭제
모든 세션변수 삭제
세션 삭제