세션 ID : lpb0f3fq5mueslh7s0hp2lnnru
session1 :
Warning: Undefined array key "session1" in /users/2021/i2151043/public_html/2022/WebProg/ch10/exam10-06.php on line 13

session2 :
Warning: Undefined array key "session2" in /users/2021/i2151043/public_html/2022/WebProg/ch10/exam10-06.php on line 14

session3 :
Warning: Undefined array key "session3" in /users/2021/i2151043/public_html/2022/WebProg/ch10/exam10-06.php on line 15

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