PHP-FPM PHP.INI Location & Configuration

[patrick.jean]

hello --

and thank you in advance for an answer that will solve my problem. i would like to configure PHP-FPM on a per sub-domain level. I placed the specific php.ini that enables APC caching in the sub-domain/conf/php.ini file but that doesn't seem to work, neither updating the php.ini via the provided GUI in Plesk. Any suggestions would be much appreciated on how to do this.

thank you again,
patrick.