Socket Functions
PHP Manual

socket_create_listen

Opens a socket on port to accept connections

Description

Socketfalse socket_create_listen(int $port, int $backlog = SOMAXCONN)

socket_create_listen creates a new Socket instance of type AF_INET listening on all local interfaces on the given port waiting for new connections.

This function is meant to ease the task of creating a new socket which only listens to accept new connections.

Parameters

port

The port on which to listen on all interfaces.

backlog

The backlog parameter defines the maximum length the queue of pending connections may grow to. SOMAXCONN may be passed as backlog parameter, see socket_listen for more information.

Return Values

socket_create_listen returns a new Socket instance on success or false on error. The error code can be retrieved with socket_last_error. This code may be passed to socket_strerror to get a textual explanation of the error.

Changelog

Version Description
8.0.0 On success, this function returns a Socket instance now; previously, a resource was returned.

Notes

Note:

If you want to create a socket which only listens on a certain interface you need to use socket_create, socket_bind and socket_listen.

See Also

  • socket_create
  • socket_create_pair
  • socket_bind
  • socket_listen
  • socket_last_error
  • socket_strerror