Making async TCP connection with PHP

async-socket.php

<?php
/**
 * User: Tom.Zhu<[email protected]>
 * Date: 2022/10/7
 * Time: 23:34
 */

$base = new EventBase();

$start = microtime(true);
//$client = stream_socket_client("tcp://180.101.49.12:80", $errorCode, $errorMsg, 10);

$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_nonblock($sock);


$bev = new EventBufferEvent($base, $sock, 0, function($bev){
    do {
        $data = $bev->getInput()->read(10240);
        echo $data;
    } while (strlen($data) > 0);
}, null, null);

$v = socket_connect($sock, '180.101.49.12', 80);
$bev->enable(Event::READ | Event::WRITE);

$output = $bev->getOutput();
$output->add(
    "GET / HTTP/1.1\r\n".
    "Host: www.baidu.com\r\n".
    "Connection: close\r\n".
    "\r\n"
);


$end = microtime(true);


echo "connection time: ", $end - $start, "\n";

$base->loop();