(PHP 4 >= 4.1.0, PHP 5, PHP 7) Shuts down a socket for receiving, sending, or both

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Receives data from a connected socket

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Return a string describing a socket error

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Write to a socket

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Sends data to a connected socket

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Creates a pair of indistinguishable sockets and stores them in an array

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Create a socket (endpoint for communication)

(PHP 5 >= 5.5.0, PHP 7) Read a message int

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Opens a socket on port to accept connections

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Sets nonblocking mode for file descriptor fd