The current APCu cache driver implements a global clearing of the APCu
when the phpBB cache is purged. This is inappropriate if there are other
phpBB boards, or other php applications sharing the APCu cache.
This patch changes the behviour so that only cache entries matching
the key_prefix of this board are cleared by a phpBB cache purge.
The APCu unit test script has been updated to test this behaviour.
It has also been updated so that the test case can be run individually
previously it relied on initialisations made in other test scripts.
PHPBB3-15726
In some functions like sql_save in cache/memory.php, code try to save a key/value in cache with ttl = 0 so key should never expire. In current redis.php cache driver, it fails so key never get cached. This cause for example that when you create a subforum, it not appear in the forum box in the admincp.
To solve, if ttl is 0, we use redis->set instead of setex
Add new cache driver apcu.php (based closely on existing APC cache driver)
Add new unit test apcu_driver_test.php for the new driver
Update RUNNING_TESTS.md to clarify requirements for apc, apcu and apc_bc extensions
and add a couple of general hints to RUNNING_TESTS.md
PHPBB3-15247
* develop-ascraeus:
[ticket/12789] Move duplicated functions to the base class
[ticket/12789] Remove the directories in \phpbb\cache\driver\memory::purge()
Conflicts:
phpBB/phpbb/cache/driver/file.php
phpBB/phpbb/cache/driver/memory.php
* develop-ascraeus:
[ticket/12838] Simplify normal special rank array creation
[ticket/12838] Update RC2 to RC3
[ticket/12838] Update events.md to RC3
[ticket/12838] Allow for extra columns in cache obtain_ranks()
[ticket/12838] Add raw row-data to acp_ranks core event
[ticket/12838] Simplify special rank template conditional
[ticket/12838] Add core events to acp_ranks.php
[ticket/12838] Update events.md
[ticket/12838] Add _before versions
[ticket/12838] Add template events to acp_ranks.html
* develop-ascraeus:
[ticket/12557] Fix load active module description
[ticket/12557] Fix php file description
[ticket/12557] Fix post data description for notifications
[ticket/12557] Fix pass by reference doc blocks
[ticket/12557] Fix doc block in extension base class
[ticket/12557] Fix doc block in mimetype guesser
[ticket/12557] Fix var $preserve_cr description
[ticket/12557] Fix doc block errors found by Sami
[ticket/12557] Fix doc block errors found by Sami
[ticket/12557] Fix doc block errors found by Sami
[ticket/12557] Template fixes
[ticket/12557] Search, cron and profilefields fixes
[ticket/12557] Notification fixes
[ticket/12557] Fix doc block errors found by Sami pt1
[ticket/12557] Fix doc block errors found by Sami
[ticket/12557] Fix doc block errors found by Sami
