APC is the Alternative PHP Cache.
It was conceived of to provide a free, open, and robust framework for
caching and optimizing PHP intermediate code.
WWW: http://pecl.php.net/package/APC
===> The following configuration options are available for pecl-APC-3.0.19:
MMAP=off (default) "Enable mmap memory support (default: IPC shm)"
SEMAPHORES=off (default) "Enable sysv IPC semaphores (default: fcntl())"
SPINLOCKS=off (default) "Enable spinlocks (experimental)"
FILEHITS=off (default) "Enable per request cache info"
PHP4_OPT=off (default) "Little optimization to PHP4"
===> Use 'make config' to modify these settings