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Check PHP OPcache settings

harmlessPHPalle
user@server
php -i | grep -E '^opcache\.(enable|enable_cli|memory_consumption|max_accelerated_files|validate_timestamps|revalidate_freq) '

Filters the central OPcache directives from the PHP configuration. Values that are too small for memory_consumption or max_accelerated_files cause scripts to be recompiled constantly on large WordPress installations. With validate_timestamps=0, PHP only detects changed files after FPM is reloaded.

Note: These are the command line values, where OPcache is usually disabled (enable_cli). The website uses the values from the FPM configuration.

Open question before approval: Die CLI-Werte können von PHP-FPM abweichen. Prüfen, ob für Plesk ein besserer Weg zur Abfrage der FPM-Werte genannt werden soll (etwa opcache_get_status per Testskript).

Also searched as

  • is opcache enabled
  • opcache memory too small
  • improve php performance

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All in PHP

Reload PHP-FPM for a Plesk PHP version

#systemctl reload plesk-php83-fpm
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Check all PHP files in a directory for syntax errors

$find /var/www/vhosts/example.com/httpdocs/wp-content/themes -name '*.php' -exec php -l {} \; 2>&1 | grep -v '^No syntax errors'
harmlessPHP

Check Composer packages for known vulnerabilities

$composer audit --working-dir=/var/www/vhosts/example.com/httpdocs
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Check the current value of a PHP setting

$php -i | grep -i memory_limit
harmlessPHP

Check whether a PHP extension is loaded

$php -m | grep -i imagick
harmlessPHP

Count PHP-FPM processes per pool

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

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