세션ID : 0r1d6qo3koo69en4ca71tajkln
session1 :
Warning: Undefined array key "session1" in /users/2019/i1919027/public_html/2022/WebProg/ch10/exam10-05.php on line 11

session2 :
Warning: Undefined array key "session2" in /users/2019/i1919027/public_html/2022/WebProg/ch10/exam10-05.php on line 12

session3 :
Warning: Undefined array key "session3" in /users/2019/i1919027/public_html/2022/WebProg/ch10/exam10-05.php on line 13

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세션변수 session1 삭제
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세션삭제
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