(PHP 7) Clear the most recent error void error_clear_last

(PECL runkit >= 0.7.0) Dynamically changes the name of the given method

(PHP 5, PHP 7) Restores the previously defined exception handler function

(PHP 4, PHP 5, PHP 7) Gets the current PHP version

(PECL runkit >= 0.7.0) Copies a method from class to another

(PHP 5, PHP 7 >= 5.5.0, PHP 7) Sets the process title

(PECL apc >= 3.1.1) Constructs an APCIterator iterator object

(PHP 4, PHP 5, PHP 7) Returns an array with the names of included or required files

(PECL wincache >= 1.1.0) Retrieves information about user cache memory usage

(PHP 4, PHP 5, PHP 7) Gets the version of the current Zend engine