Socket Functions
PHP Manual

socket_set_block

Sets blocking mode on a socket

Description

bool socket_set_block(Socket $socket)

The socket_set_block function removes the O_NONBLOCK flag on the socket specified by the socket parameter.

When an operation (e.g. receive, send, connect, accept, ...) is performed on a blocking socket, the script will pause its execution until it receives a signal or it can perform the operation.

Parameters

socket

A Socket instance created with socket_create or socket_accept.

Return Values

Returns true on success or false on failure.

Changelog

Version Description
8.0.0 socket is a Socket instance now; previously, it was a resource.

Examples

Example #1 socket_set_block example

<?php
$socket = socket_create_listen(1223);
socket_set_block($socket);

socket_accept($socket);
?>

This example creates a listening socket on all interfaces on port 1223 and sets the socket to O_BLOCK mode. socket_accept will hang until there is a connection to accept.

See Also

  • socket_set_nonblock
  • socket_set_option