How many PHP calls is too many for one webpage?

[Evolution]

On my homepage, I have five 'require_once' calls and within one of
those, two more 'require_once' calls. I want to increase this from
those seven to about twelve. This seems like no problem but I'm
wondering what the most anyone else has tried without any costly
degradation of load time.

Thanks a bunch.

 

[Evolution]

On my homepage, I have five 'require_once' calls and within one of
those, two more 'require_once' calls.  I want to increase this from
those seven to about twelve.  This seems like no problem but I'm
wondering what the most anyone else has tried without any costly
degradation of load time.

Thanks a bunch.

Sorry. I inadvertently posted to the wrong newsgroup. I apologize
for any annoyance this may have caused.