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In the examples shown, replace "X.Y" with your app's PHP version [for example, "5.6" or "7.1"].
The APCu extension adds object caching functions to PHP.
APCu is the official replacement for the outdated APC extension. APC provided both opcode caching [opcache] and object caching. As PHP versions 5.5 and above include their own opcache, APC was no longer compatible, and its opcache functionality became useless. The developers of APC then created APCu, which offers only the object caching functionality [they removed the outdated opcache].
Installing APCu on PHP 7.0, 7.1, 7.2, 7.3, and 7.4
To install this extension on PHP 7.X, SSH in to your server as root and run these commands:
sudo apt-get -y install gcc make autoconf libc-dev pkg-config sudo pecl7.X-sp install apcu
When asked the following question, press Enter.
Enable internal debugging in APCu [no] :
Once installed, create a configuration file for the extension and restart PHP by running the following commands as root
sudo bash -c "echo extension=apcu.so > /etc/php7.X-sp/conf.d/apcu.ini" sudo service php7.X-fpm-sp restart
APCu for PHP 7+ does not support an option for full backwards compatibility with APC. If you require full backwards compatibility with APC and you're using PHP 7+, you'll also need to install the APCu Backwards Compatibility [apcu-bc] extension.
Installing APCu on PHP 5.4, 5.5, and 5.6
To install this extension on PHP 5.X, SSH in to your server as root and run these commands:
sudo apt-get -y install gcc make autoconf libc-dev pkg-config sudo pecl5.X-sp install apcu-4.0.11
When asked the following questions, press Enter.
Enable full APC compatibility [yes] : Enable internal debugging in APCu [no] :
Once installed, create a configuration file for the extension and restart PHP by running the following command as root:
sudo bash -c "echo extension=apcu.so > /etc/php5.X-sp/conf.d/apcu.ini" sudo service php5.X-fpm-sp restart
Verifying the Installation
You can verify APCu is installed correctly by running the command:
phpX.Y-sp -i | grep apcu
You should see output like the following:
Additional .ini files parsed => /etc/phpX.Y-sp/conf.d/apcu.ini, apcu
Uninstalling the APCu Extension
To uninstall this extension, as root run the commands:
sudo rm /etc/phpX.Y-sp/conf.d/apcu.ini sudo peclX.Y-sp uninstall apcu
Next, restart PHP-FPM with the command:
sudo service phpX.Y-fpm-sp restart
Last updated: October 8, 2018
1. Install php7.4-apcu package
Learn how to install php7.4-apcu package:
sudo apt install php7.4-apcu
2. Uninstall / Remove php7.4-apcu package
Please follow the step by step instructions below to uninstall php7.4-apcu package:
sudo apt remove php7.4-apcu
sudo apt autoclean && sudo apt autoremove
3. Details of php7.4-apcu package
Package: php7.4-apcu
Source: php-apcu
Priority:
optional
Section: php
Installed-Size: 177
Maintainer: Debian PHP PECL Maintainers
Architecture: amd64
Version: 5.1.21+4.0.11-8+ubuntu20.04.1+deb.sury.org+1
Replaces: php-apcu [= 2.14]
Conflicts: php-xcache, php-yac
Pre-Depends: php-common [>= 2:69~]
Breaks: php-apcu [ /etc/php/mods-available/test.ini ; configuration for php apcu module ; priority=20 extension=apcu.so $ ln -s /etc/php/mods-available/apcu.ini /etc/php/7.0/fpm/conf.d/20-apcu.ini $ service php7.0-fpm restart
phpinfo[] output:
answered Oct 30, 2016 at 9:55
automatixautomatix
13k24 gold badges98 silver badges220 bronze badges
I use Ubuntu 20.04 and php-fpm 7.4. To install apcu:
apt install php-apcu
answered Jan 16, 2021 at 9:53
MawanMawan
836 bronze badges
1
for PHP7.3 use following commands
sudo apt-get install php7.3-apcu -y
sudo service php7.3-fpm restart
sudo service apache2 restart
answered Mar 10, 2021 at 10:29