세션ID : qhlt4q41ut9q5gvk8fs7g9gio2
session1 :
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session2 :
Warning: Undefined array key "session2" in /users/2019/i1962026/public_html/2022/WebProg/ch10/exam10-07.php on line 14

session3 :
Warning: Undefined array key "session3" in /users/2019/i1962026/public_html/2022/WebProg/ch10/exam10-07.php on line 15

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