Change the module to require only the APCu extension

APCu for PHP7 (5.x) dropped the old APC compatibility.

You need to activate the apcu_bc (for Backward Compabitility.) That may or may not work, I did not try it.

Maybe the apc module can be change such that it doesn't need the backwards compatibility extension to be available.

You can just add this line above "// APCu reports cache ...."

    $apc_enabled = (function_exists('apcu_cache_info') && ($cache = @apcu_cache_info(TRUE)));

It won't make the module work, but you'll no longer see it in the requirements screen, if that's what you're looking for.

duplicate...

Since I needed the plugin on PHP 7.0 without APCU-BC (Ubuntu Xenial 16.05 LTS), here is a port I did for the cache plugin.

I did not touch the requirements: the module doesn't need to be enabled to use the plugin anyway.

This patch works really fine!

hi a patch based upon 2846622-apcu-php7.patch.

Hi qqboy, could you please report, what are the improvements of your patch compared to #6?

Maybe an interdiff ?

FWIW
#2 makes it and worked well
installing php-apcu-bc makes it green again :)

Thanks

I'm not sure if I'm posting to the right thread or if I should start a new one, but I can't get this to work with

Drupal 8.9.2 and 7.3.19-1~deb10u1

I have installed both modules:

[9:27:07] root :: micro  ➜  7.3/fpm/conf.d » dpkg -l | grep apc
ii  php-apcu                                                    5.1.17+4.0.11-1                                           amd64        APC User Cache for PHP
ii  php-apcu-bc                                                 1.0.4-4                                                   amd64        APCu Backwards Compatibility Module

I have restarted php-fpm.

Looking at phpinfo() I see:

APCu Support 	Enabled
Version 	5.1.17
APCu Debugging 	Disabled
MMAP Support 	Enabled
MMAP File Mask 	no value
Serialization Support 	php
Build Date 	Feb 8 2019 16:18:59
Directive	Local Value	Master Value
apc.coredump_unmap	Off	Off
apc.enable_cli	Off	Off
apc.enabled	On	On
apc.entries_hint	4096	4096

Still my Drupal Report tells me:

PHP APCu caching: Not enabled. PHP APCu caching can improve your site's performance considerably. It is highly recommended to have APCu installed on your server.

Do I have to add something to settings.php to get it to work?

To make the module compatible with APCu, also the code in apc_requirements() must be changed. apc_requirements() cannot assume the APCu Backwards Compatibility Module extension is installed. That could be true most of the times, but it is not necessarily true.

Also, since the APC extension is no longer maintained and has been superseded, the code can simply rely on the apcu_*() functions.

The last stable APC version has been releases on May, 2011, five years and a half before this issue was open.
Hopefully, no Drupal 7 site is still running on PHP 5. They are more probably running on PHP 7 or 8, with the APCu extension.