(PECL apcu >= 5.0.0) Checks if current position is valid

(PECL apd 0.2-0.4) Starts the session debugging

(PECL uopz >= 1.0.0) Undefine a constant void

(PECL runkit >= 0.7.0) Replace a function definition with a new implementation

(PHP 4, PHP 5, PHP 7) Alias of

(PECL wincache >= 1.0.0) Retrieves information about memory usage by the resolve file path cache

(PECL apcu >= 4.0.0) Checks if entry exists

(PECL runkit >= 0.7.0) Add a new function, similar to

(PECL wincache >= 1.0.0) Retrieves information about resolve file path cache

(PHP 5 >= 5.2.4, PHP 7) Retrieve a path to the loaded php.ini file