Warning: session_start(): open(/var/lib/php/sessions/sess_6a1umaaunkblqscl3k437ghfsb, O_RDWR) failed: No space left on device (28) in /users/2018/i1858006/public_html/2019/webprog/ch10/exam10-06.php on line 1

Warning: session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /users/2018/i1858006/public_html/2019/webprog/ch10/exam10-06.php on line 1
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session1 :
Warning: Undefined array key "session1" in /users/2018/i1858006/public_html/2019/webprog/ch10/exam10-06.php on line 16

session2 :
Warning: Undefined array key "session2" in /users/2018/i1858006/public_html/2019/webprog/ch10/exam10-06.php on line 17

session3 :
Warning: Undefined array key "session3" in /users/2018/i1858006/public_html/2019/webprog/ch10/exam10-06.php on line 18

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