(PHP 4, PHP 5, PHP 7) Deletes a file bool unlink

(PHP 4, PHP 5, PHP 7) Seek on a gz-file pointer

(PHP 5, PHP 7) Return the string representation of the current element

(PHP 5 >= 5.3.0, PHP 7) Activates the circular reference collector

(PHP 4, PHP 5, PHP 7) Turn implicit flush on/off

(PHP 4, PHP 5, PHP 7) Close an ODBC connection

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Set bit void

(PECL fann >= 1.0.0) Trains on an entire dataset, for a period of time using the Cascade2 training algorithm

(PHP 4, PHP 5, PHP 7) Create a new image from file or URL

(PECL paradox >= 1.0.0) Stores record into paradox database