How to Install PHP Redis on PHP-FPM

John on October 06, 2021

To install PHP Redis, use the following instructions:

Step 1

Install PHP Redis on Ubuntu with the following command and hit ENTER on every prompt without typing anything:

sudo pecl install redis

If you get an error you may need to install the PHP XML extension

sudo apt-get install php7.2-xml

If you get a phpize error install PHP-dev then run the PHP Redis install command again:

sudo apt-get install php7.2-dev

Step 2

Restart the PHP service to apply the changes (replace the PHP version number with yours:)

sudo systemctl restart php7.2-fpm.service

Now check redis is active with:

php -m

If you don't see redis try adding redis.ini manually:

Create a redis.ini file in the mods-available directory for your PHP version:

sudo nano /etc/php/7.2/mods-available/redis.ini

Add the following content to the file and save:

extension=redis.so

Then use the commands below to create symlinks manually:

sudo ln -sf /etc/php/7.2/mods-available/redis.ini /etc/php/7.2/fpm/conf.d/20-redis.ini

sudo ln -sf /etc/php/7.2/mods-available/redis.ini /etc/php/7.2/cli/conf.d/20-redis.ini

sudo systemctl restart php7.2-fpm.service