How do I specify different php config values for each subdomain?

[motin]

I have a testing subdomain and a live subdomain, and in vhcs I used php_admin_value to set display_errors to 1 resp 0 for the different domains.

Also, for some directories I use special error_log directives.

With ispcp's fastcgi-based and one-php.ini-per-customer approach - how can I differentiate the configuration on a subdomain basis?

Thanks for your reply!