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Reload PHP-FPM for a Plesk PHP version

caution rootPHPdebian, ubuntu

Caution: This command changes the system. Understand what it does before you run it.

Adjust the values, the command updates live
root@server
systemctl reload plesk-php83-fpm

Reloads the PHP-FPM master process, letting running requests finish cleanly. Afterwards, changed pool and ini settings apply and the OPcache is cleared. Useful after code deployments with opcache.validate_timestamps=0 or when old code keeps being served.

Note: The version is given without a dot (83 for PHP 8.3). For Debian’s own PHP, the service is called php8.2-fpm. If reload does not help, use restart.

Also searched as

  • restart php-fpm plesk
  • clear opcache
  • php changes not taking effect

Related one-liners

All in PHP

Show all PHP-FPM services and their status

$systemctl list-units --type=service --all 'php*-fpm*' 'plesk-php*-fpm*'
harmlessPHP

List available PHP handlers in Plesk

#plesk bin php_handler --list
harmlessPlesk

Check PHP OPcache settings

$php -i | grep -E '^opcache\.(enable|enable_cli|memory_consumption|max_accelerated_files|validate_timestamps|revalidate_freq) '
harmlessPHP

Count PHP-FPM processes per pool

$ps -eo args | grep '[p]hp-fpm: pool' | awk '{print $NF}' | sort | uniq -c | sort -rn
harmlessPHP

List all installed Plesk PHP versions

$for p in /opt/plesk/php/*/bin/php; do echo "$p: $($p -r 'echo PHP_VERSION;')"; done
harmlessPHP

Run a PHP script with a specific Plesk PHP version

$/opt/plesk/php/8.3/bin/php /var/www/vhosts/example.com/httpdocs/cron.php
cautionPHP

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