Change OPcache interned strings buffer size globally
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Prologue
In some cases you may need to define a higher interned_strings_buffer than given by the default PHP configuration.
You can create a file in the mods-available folder and enable it.
The only downside to this is, if you install a newer PHP version, you might have to repeat the process.
/etc/php/8.1/mods-available/local-opcache.ini
1 opcache.interned_strings_buffer=16
Enable it with following command:
phpenmod local-opcache
# You may need to restart your services to make this work.
# systemctl restart apache2
# systemctl restart php8.1-fpm.service