(PHP 5, PHP 7) Create an Internet or Unix domain server socket

(PHP 5, PHP 7) Retrieve list of registered filters

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Retrieve information about a file

(PHP 5 >= 5.3.0, PHP 7) Set the default stream context

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Attach a filter to a stream

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Close directory handle

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Write to stream

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Rewind directory handle

(PHP 5, PHP 7) Renames a file or directory public

(PHP 5, PHP 7) Sends a message to a socket, whether it is connected or not