세션 ID : hrmv4lphi7must2fgu97q27dci
session1 :
Warning: Undefined array key "session1" in /users/2020/i2040029/public_html/2022/WebProg/ch10/exam10-07.php on line 13
session2 :
Warning: Undefined array key "session2" in /users/2020/i2040029/public_html/2022/WebProg/ch10/exam10-07.php on line 14
session3 :
Warning: Undefined array key "session3" in /users/2020/i2040029/public_html/2022/WebProg/ch10/exam10-07.php on line 15
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