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Multiple PHP installations

Install additional PHP version​

PHP 7.3​

yum install --disablerepo='*' --enablerepo=base,remi,epel,updates php73-php php73-php-pecl-mcrypt php73-php-pdo php73-php-mysqlnd php73-php-opcache php73-php-xml php73-php-gd php73-php-devel php73-php-mysql php73-php-intl php73-php-mbstring php73-php-bcmath php73-php-json php73-php-iconv php73-php-pecl-redis php73-php-fpm php73-php-zip php73-php-soap php73-php-sodium libsodium

PHP 7.4​

yum install --disablerepo='*' --enablerepo=base,remi,epel,updates php74-php php74-php-pecl-mcrypt php74-php-pdo php74-php-mysqlnd php74-php-opcache php74-php-xml php74-php-gd php74-php-devel php74-php-mysql php74-php-intl php74-php-mbstring php74-php-bcmath php74-php-json php74-php-iconv php74-php-pecl-redis php74-php-fpm php74-php-zip php74-php-soap php74-php-sodium libsodium

PHP 8.1​

yum install --disablerepo='*' --enablerepo=base,remi,epel,updates php81-php php81-php-pecl-mcrypt php81-php-pdo php81-php-mysqlnd php81-php-opcache php81-php-xml php81-php-gd php81-php-devel php81-php-mysql php81-php-intl php81-php-mbstring php81-php-bcmath php81-php-json php81-php-iconv php81-php-pecl-redis php81-php-fpm php81-php-zip php81-php-soap php81-php-sodium libsodium

PHP 8.2​

yum install --disablerepo='*' --enablerepo=base,remi,epel,updates php82-php php82-php-pecl-mcrypt php82-php-pdo php82-php-mysqlnd php82-php-opcache php82-php-xml php82-php-gd php82-php-devel php82-php-mysql php82-php-intl php82-php-mbstring php82-php-bcmath php82-php-json php82-php-iconv php82-php-pecl-redis php82-php-fpm php82-php-zip php82-php-soap php82-php-sodium libsodium

Apply Magento 2 PHP optimisations​

Simply copy and paste the below:

sed -i 's/opcache.memory_consumption=128/opcache.memory_consumption=512/g' /etc/opt/remi/php*/php.d/*opcache.ini
sed -i 's/opcache.interned_strings_buffer=8/opcache.interned_strings_buffer=12/g' /etc/opt/remi/php*/php.d/*opcache.ini
sed -i 's/opcache.max_accelerated_files=4000/opcache.max_accelerated_files=60000/g' /etc/opt/remi/php*/php.d/*opcache.ini
sed -i 's/;opcache.save_comments=0/opcache.save_comments=1/g' /etc/opt/remi/php*/php.d/*opcache.ini
sed -i 's/;opcache.save_comments=1/opcache.save_comments=1/g' /etc/opt/remi/php*/php.d/*opcache.ini
sed -i 's/opcache.save_comments=0/opcache.save_comments=1/g' /etc/opt/remi/php*/php.d/*opcache.ini
sed -i 's/;opcache.load_comments=1/opcache.load_comments=1/g' /etc/opt/remi/php*/php.d/*opcache.ini
sed -i 's/;opcache.load_comments=0/opcache.load_comments=1/g' /etc/opt/remi/php*/php.d/*opcache.ini
sed -i 's/;opcache.enable_file_override=0/opcache.enable_file_override=1/g' /etc/opt/remi/php*/php.d/*opcache.ini
sed -ie "s_;date.timezone =_date.timezone = "Europe/London"_g" /etc/opt/remi/php*/php.ini
sed -ie "s/; max_input_vars = 1000/max_input_vars = 20000/g" /etc/opt/remi/php*/php.ini
sed -ie "s/;max_input_vars = 1000/max_input_vars = 20000/g" /etc/opt/remi/php*/php.ini
sed -ie "s/memory_limit = 128M/memory_limit = 756M/" /etc/opt/remi/php*/php.ini
sed -ie "s/memory_limit = 512M/memory_limit = 756M/" /etc/opt/remi/php*/php.ini
sed -ie "s/max_execution_time = 30/max_execution_time = 18000/" /etc/opt/remi/php*/php.ini
sed -ie "s/max_input_time = 60/max_input_time = 90/" /etc/opt/remi/php*/php.ini
sed -ie "s/short_open_tag = Off/short_open_tag = On/" /etc/opt/remi/php*/php.ini
sed -ie "s/;always_populate_raw_post_data = On/always_populate_raw_post_data = -1/" /etc/opt/remi/php*/php.ini
sed -ie "s/expose_php = On/expose_php = Off/" /etc/opt/remi/php*/php.ini
sed -ie "s/upload_max_filesize = 2M/upload_max_filesize = 8M/" /etc/opt/remi/php*/php.ini
sed -ie "s/zlib.output_compression = Off/zlib.output_compression = On/" /etc/opt/remi/php*/php.ini
echo ";Default" | tee /etc/opt/remi/php*/php-fpm.d/www.conf > /dev/null
echo "suhosin.session.cryptua = off" | tee -a /etc/opt/remi/php*/php.ini > /dev/null

Configure PHP-FPM​

Copy original PHP-FPM configuration file(s)​

We recommend you only copy the domain(s) configuration file you want to use the additional PHP version. We are using version 7.2 in this example:

cp /etc/php-fpm.d/examplecom.conf /etc/opt/remi/php72/php-fpm.d/examplecom.conf

Edit the copied file(s)​

Ensure you change the following lines in the copied PHP-FPM configuration file, using your desired version of PHP (Using version 7.2 in this example):

[examplecom82]
listen = '/var/run/php-fpm-examplecom82.sock'
slowlog = /var/www/vhosts/example.com/example.com-phpfpm-slow82.log
php_admin_value[error_log] = /var/www/vhosts/example.com/example.com-phpfpm-error82.log

PHP-FPM configuration check​

Using 7.2 in this example:

/opt/remi/php82/root/sbin/php-fpm -t
NOTICE: configuration file /etc/opt/remi/php82/php-fpm.conf test is successful

Start and enable​

Using 8.2 in this example:

systemctl daemon-reload
systemctl enable --now php82-php-fpm

Reload​

If you make a configuration change to one of the PHP-FPM configuration files, perform a config test and then reload with the command (Using 7.2 in this example)

systemctl reload php82-php-fpm

NGINX VirtualHost change​

Change the sock file in NGINX so the domain(s) use the desired version of PHP. We are using 8.2 in this example and editing the file /etc/nginx/conf.d/example.com.conf:

# Define the PHP-FPM socket file for nginx to proxy-pass to
upstream examplecombackend {
    server unix:/var/run/php-fpm-examplecom82.sock;
}

Following this you will need to test the NGINX configuration and reload the service:

nginx -t && nginx -s reload

Checking running PHP installations​

You can find out which PHP-FPM versions are running on the server with the following command:

ps awux | grep php | grep master

Example:

~]# ps awux | grep php | grep master
root     16718  0.0  0.2 934204 22708 ?        Ss   Jul03   8:39 php-fpm: master process (/etc/php-fpm.conf)
root     25623  0.1  0.3 519820 31280 ?        Ss   15:00   0:00 php-fpm: master process (/etc/opt/remi/php81/php-fpm.conf)
root     25761  4.0  0.2 535516 17496 ?        Ss   15:02   0:00 php-fpm: master process (/etc/opt/remi/php82/php-fpm.conf)

Checking installed PHP versions​

You can review the installed PHP versions with the command:

rpm -qa | grep php-common

Example:

~]# rpm -qa | grep php-common
php70-php-common-7.0.33-13.el7.remi.x86_64
php-common-7.2.19-2.el7.remi.x86_64
php73-php-common-7.3.9-1.el7.remi.x86_64

Magento 2 CLI​

Using 8.2 in this example:

php82 bin/magento cache:status

Uninstalling additional PHP version​

Example using PHP 8.2:

yum remove --disablerepo='*' --enablerepo=base,remi,epel,updates php82-*