phpMyAdminのログイン状態のタイムアウト時間を 24分から伸ばす設定変更方法

# /var/www/html/phpMyAdmin/libraries/config.default.php

cd /var/www/html/phpMyAdmin/
cat ./libraries/config.default.php | grep LoginCookieValidity

/**
 * validity of cookie login (in seconds; 1440 matches php.ini's
 * session.gc_maxlifetime)
 *
 * @global integer $cfg['LoginCookieValidity']
 */
$cfg['LoginCookieValidity'] = 1440;

1440秒 / 60秒 = 24分、24分間ログイン状態が有効

1800 = 30分
3600 = 60分
4200 = 70分

... 略 ...

[Session]

... 略 ...

; After this number of seconds, stored data will be seen as 'garbage' and
; cleaned up by the garbage collection process.
; http://php.net/session.gc-maxlifetime
session.gc_maxlifetime = 1440

; NOTE: If you are using the subdirectory option for storing session files
;       (see session.save_path above), then garbage collection does *not*
;       happen automatically.  You will need to do your own garbage
;       collection through a shell script, cron entry, or some other method.
;       For example, the following script is the equivalent of setting
;       session.gc_maxlifetime to 1440 (1440 seconds = 24 minutes):
;          find /path/to/sessions -cmin +24 -type f | xargs rm

... 略 ...

$cfg['LoginCookieValidity']

Type: integer [number of seconds]
Default value: 1440

Define how long a login cookie is valid. Please note that php configuration option session.gc_maxlifetime might limit session validity and if the session is lost, the login cookie is also invalidated.
 So it is a good idea to set session.gc_maxlifetime at least to the same value of $cfg['LoginCookieValidity'].