(PECL weakref >= 0.2.0) Counts the number of live entries in the map

(PECL apcu >= 5.0.0) Rewinds iterator public

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

(PECL bcompiler >= 0.5) Writes an included file as bytecodes

(Unknown) Outputs the current function table

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

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

(PECL apd 0.2-0.4) Changes or sets the current debugging level

(PECL weakref >= 0.2.0) Returns the current value under iteration

(PHP 4, PHP 5, PHP 7) Gets PHP script owner's UID