(PECL apc >= 2.0.0) Retrieves APC's Shared Memory Allocation information

(PECL apcu >= 4.0.0) Cache a new variable in the data store

(PECL apc >= 3.0.13) Cache a new variable in the data store

(PECL apc >= 3.1.1) Move pointer to next item

(PECL apcu >= 4.0.0) Updates an old value with a new value

(PECL apc >= 3.1.1) Updates an old value with a new value

(PECL apcu >= 5.0.0) Constructs an APCUIterator iterator object

(PECL apc >= 3.1.4) Get a binary dump of the given files and user variables

(PECL apc >= 3.1.4) Load a binary dump from a file into the APC file/user cache

(PECL apc >= 3.0.13) Stores a file in the bytecode cache, bypassing all filters.