bool socket_set_nonblock(resource $socket)
The socket_set_nonblock() function sets the
O_NONBLOCK flag on the socket specified by the
When an operation (e.g. receive, send, connect, accept, ...) is performed on a non-blocking socket, the script will not pause its execution until it receives a signal or it can perform the operation. Rather, if the operation would result in a block, the called function will fail.
TRUE on success or
FALSE on failure.
- resource $socket: A valid socket resource created with socket_create() or socket_accept().
Example #1 socket_set_nonblock() example
$socket = socket_create_listen(1223);
This example creates a listening socket on all interfaces on port 1223 and sets the socket to
O_NONBLOCK mode. socket_accept() will immediately fail unless there is a pending connection exactly at this moment.