如何开启一个udp服务

1、案例函数汇总

2、案例

创建一个udp服务，接收客户端的请求。并打印相应的信息

2.1、udp服务代码

<?php

/**

* Copyright (C) Iamasb

* @project : 3、workerman相关知识点

* @explain : stream创建udp服务

* @filename : 36、stream创建udp服务.php

* @author : xiaobei 2801616735@qq.com

*/

error_reporting(0);

$local = "udp://0.0.0.0:1235";

$main = stream_socket_server($local,$errno,$errstr,STREAM_SERVER_BIND );

if (!$main) {

echo "error->",$errno,' errstr->',$errstr,PHP_EOL;

exit;

}

$start = "hello world.";

while (true) {

$string = stream_socket_recvfrom($main,1024,0,$peer);

echo "receive->",$string," from->",$peer,PHP_EOL;

stream_socket_sendto($main,$start,0,$peer);

$string = stream_socket_recvfrom($main,1024,0,$peer);

echo "receive->",$string," from->",$peer,PHP_EOL;

stream_socket_sendto($main,$start,0,$peer);

}

2.2、启动udp服务

3、测试

编写udp客户端

3.1、编写udp客户端

<?php

/**

* Copyright (C) Iamasb

* @project : 3、workerman相关知识点

* @explain : stream创建udp客户端

* @filename : 37、stream创建udp客户端.php

* @author : xiaobei 2801616735@qq.com

*/

error_reporting(0);

$local = "udp://127.0.0.1:1235";

$client = stream_socket_client($local,$errno,$errstr);

if (!$client) {

echo "error->",$errno,'-->',$errstr,PHP_EOL;

exit;

}

$remoteIp = stream_socket_get_name($client,true);

echo "remoteIp->".$remoteIp,PHP_EOL;

// 读写方式1

$string = "i am a sb.";

fwrite($client,$string);

//echo fread($client,1024);

// 读写方式2

echo stream_socket_recvfrom($client,1024,0,$peer);

stream_socket_sendto($client,"hahah",0,$peer);

fclose($client);

3.2、测试结果