Setting up APC w/ Custom Configs outside of H-Sphere
To set up APC outside of H-Sphere is actually fairly simple to do, you
just need to create the following file (ensuring that Zend and APC are
turned off in H-Sphere CP under P.Servers):
/hsphere/local/config/httpd2/php5/php.d/apc.ini
and populate it with the below (at a minimum):
extension="apc.so"
apc.enabled=1
You can optionally change the default memory limit (32MB) to whatever you want by adding the following line:
apc.shm_size="memory-value-here-in-megabytes"
Then reload Apache for the changes to take effect:
service httpd reload
You will also need to chattr the file immutable so H-Sphere doesn't touch it:
chattr +i apc.ini
Note: This *may* break other customizations done to the environment -- so, you'll have to be careful.