1、案例函数汇总

2、案例

通过socket创建udp服务，获取对端的ip和port信息。并进行打印

2.1、udp服务源码

/**

* Copyright(C) Iamasb

* @project : 3、workerman相关知识点

* @explain : 原生socket创建创建udp服务

* @filename : socket_udp.php

* @author : Iamasb

*/

// 创建udp

if (!($resource = socket_create(AF_INET,SOCK_DGRAM, SOL_UDP))) {

echo "socket create is error";

exit();

}

// 绑定本地ip和端口

if (!socket_bind($resource,'0.0.0.0','1235')) {

echo "socket bind is error";

exit();

}

// 设置端口复用

if (!socket_set_option($resource, SOL_SOCKET, SO_REUSEADDR, 1)) {

echo 'Unable to set option on socket: '. socket_strerror(socket_last_error()) . PHP_EOL;

exit;

}

// 循环

while (1) {

$from = '';

$port = 0;

// 接收数据

socket_recvfrom($resource, $buf, 1024, 0, $from, $port);

echo "Received $buf from remote address $from and remote port $port" . PHP_EOL;

// 往对端发送数据

socket_sendto($resource,'iamasb',strlen('iamasb'),0,$from,$port);

}

2.2、启动udp服务

3、测试

通过编写udp客户端进行测试

3.1、udp客户端代码

if (!($resource = socket_create(AF_INET,SOCK_DGRAM, SOL_UDP))) {

echo "socket create is error";

exit();

}

$msg = "Ping !";

$len = strlen($msg);

socket_sendto($resource, $msg, $len, 0, '127.0.0.1', 1235);

$from = '';

$port = 0;

socket_recvfrom($resource, $buf, 1024, 0, $from, $port);

echo "Received $buf from remote address $from and remote port $port" . PHP_EOL;

socket_close($resource);

3.2、执行udp客户端

此时udp服务端的打印结果如下