Resolves how to modify the default login timeout in PHP myadmin

Login after 1440 seconds after inactivity always automatically quit, one day to log on several times, finally have time to solve this problem, the feeling is the session timeout, the results in the online search, find a solution, hahaha, here to make a note:
phpMyAdmin often appear during the use of "login timeout (1440 seconds inactive), please login again", very annoying
The workaround is as follows:
Modify PHP.ini, find
session.gc_maxlifetime = 1440
change the value to a large number and then bring it into effect.
The experiment did not do the result.
Final Solution:
Find phpmyadmin/libraries/config.default.php file, open, modify
$cfg [' logincookievalidity '] = 1440;
Modify the 1440 to a larger value.

Note:the value of $cfg [' logincookievalidity '] cannot be greater than the value of session.gc_maxlifetime in php.ini, or phpMyAdmin will appear "Your PHP configuration parameter Session.gc_maxlifetime (outside of the chain, English) is shorter than the duration of the Cookies you set up in phpMyAdmin, so your logon session will be valid for a shorter period than the time you set up in phpMyAdmin. Error