Warning: session_start(): open(/var/lib/php/sessions/sess_fnrunrgu6v1plidec32qsc7b0b, O_RDWR) failed: No space left on device (28) in /users/2018/i1858020/public_html/2019/webprog/ch10/exam10-05.php on line 1

Warning: session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /users/2018/i1858020/public_html/2019/webprog/ch10/exam10-05.php on line 1
세션 ID :
session1 :
Warning: Undefined array key "session1" in /users/2018/i1858020/public_html/2019/webprog/ch10/exam10-05.php on line 10

session2 :
Warning: Undefined array key "session2" in /users/2018/i1858020/public_html/2019/webprog/ch10/exam10-05.php on line 11

session3 :
Warning: Undefined array key "session3" in /users/2018/i1858020/public_html/2019/webprog/ch10/exam10-05.php on line 12

세션 설정
세션 변수 session1 삭제
모든 세션 변수 삭제
세션 삭제