APC (Alternate PHP Cache) Throwing Lots of PHP Notices

Question

I got APC 3.1.9 setup on my Linux box running PHP 5.3.6.

Caching works fine but I have noticed in our error logs, that APC throws a lot of PHP notices, such as:

[Wed Jun 29 01:08:56 2011] [error] [client ip] PHP Notice: require_once() [function.require-once]: apc_cache_find [16085954]\n in /path/to/file on line 75, referer: /path/to/referer/file

[Wed Jun 29 01:08:56 2011] [error] [client ip] PHP Notice: require_once() [function.require-once]: 1. h->opened_path=[/path/to/file] h->filename=[/path/to/file]\n in /path/to/file on line 84, referer: /path/to/referer/file

[Wed Jun 29 01:08:56 2011] [error] [client ip] PHP Notice: Unknown: apc_cache_find [16215361]\n in Unknown on line 0, referer: /path/to/referer/file

--> /path/to/file & /path/to/referer/file have been inserted by me replacing the original file names

Any idea why APC throws all these messages ?

Answer 1

The exact installation line when installing/reinstalling APC is this:

Enable internal debugging in APC [no] :no