(PECL apd >= 0.2) Renames orig_name to new_name in the global function table

(Unknown) Outputs the current function table

(PECL uopz >= 1.0.0) Redefine a constant void

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

(PHP 5 >= 5.3.0, PHP 7) Forces collection of any existing garbage cycles

(PHP 4, PHP 5 < 5.5) Gets the logo guid string

(PECL weakref >= 0.1.0) Constructs a new weak reference

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

(PHP 5, PHP 7) Sets a user-defined exception handler function

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