qlg.tsgz.moe/vendor/swoole/examples/event/sockets.php

<?php
/**
 * require ./configure --enable-sockets
 */

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("Unable to create socket\n");

socket_set_nonblock($socket) or die("Unable to set nonblock on socket\n");
  
function socket_onRead($socket)
{
	static $i = 0;
	
	echo socket_read($socket, 8192)."\n";
	$i ++;
	if ($i > 10) 
	{
		echo "finish\n";
		swoole_event_del($socket);
		socket_close($socket);
	} 
	else
	{
		sleep(1);
		swoole_event_set($socket, null, 'socket_onWrite', SWOOLE_EVENT_READ | SWOOLE_EVENT_WRITE);
	}
}

function socket_onWrite($socket)
{
	socket_write($socket, "hi swoole");
	swoole_event_set($socket, null, null, SWOOLE_EVENT_READ);
}

function socket_onConnect($socket)
{
	$err = socket_get_option($socket, SOL_SOCKET, SO_ERROR);
	if ($err == 0)
	{
		echo "connect server success\n";
		swoole_event_set($socket, null, 'socket_onWrite', SWOOLE_EVENT_READ);
		socket_write($socket, "first package\n");
	}
	else
	{
		echo "connect server failed\n";
		swoole_event_del($socket);
		socket_close($socket);
	}
}

swoole_event_add($socket, 'socket_onRead', 'socket_onConnect', SWOOLE_EVENT_WRITE);
@socket_connect($socket, '127.0.0.1', 9501);