(PECL uopz >= 1.0.0) Creates a function at runtime

(PECL runkit >= 0.7.0) Redefine an already defined constant

(PECL wincache >= 1.1.0) Releases an exclusive lock on a given key

(PECL xhprof >= 0.9.0) Start XHProf profiling in sampling mode

(PHP 5 >= 5.5.0, PHP 7, PECL ZendOpcache >= 7.0.0) Invalidates a cached script

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

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

(PECL bcompiler >= 0.4) Reads and creates classes from a bz compressed file

(PECL apc >= 3.1.1) Get total count public

(PECL apd 0.2-0.4) Return all current regular resources as an array