Can someone confirm whether or not apc_clear_cache function http://php.net/manual/en/function.apc-clear-cache.php works with php-fpm ?

I can't seem to get it to clear the APC cache

apc_clear_cache();
apc_clear_cache('user');
apc_clear_cache('opcode');

using APC cache v3.1.10 and PHP 5.3.13

thanks