(PECL xattr >= 0.9.0) Get a list of extended attributes

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

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Flushes the output to a file

(PECL xdiff >= 1.5.0) Make binary diff of two strings using the Rabin's polynomial fingerprinting algorithm

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

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

(PHP 4, PHP 5, PHP 7) Gets file type string filetype

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

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Parses input from a file according to a format

(PHP 4, PHP 5, PHP 7) Returns the target of a symbolic link