(PHP 4, PHP 5, PHP 7) Returns canonicalized absolute pathname

(PHP 4, PHP 5, PHP 7) Returns trailing name component of path

(PHP 4, PHP 5, PHP 7) Return an instance of the Directory class

(PECL xdiff >= 1.5.0) Patch a string with a binary diff

(PHP 4, PHP 5, PHP 7) Truncates a file to a given length

(PHP 4 >= 4.0.3, PHP 5, PHP 7) Moves an uploaded file to a new location

(PHP 4, PHP 5, PHP 7) Gets file group int filegroup

(PHP 4, PHP 5, PHP 7) Seeks on a file pointer

(PHP 4, PHP 5, PHP 7) Gets the current working directory

(PECL xdiff >= 1.5.0) Make binary diff of two strings