<?php

set_time_limit(0);

// 设置主机和端口

$host = "127.0.0.1";

$port = 12387;

// 创建一个tcp流

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)

    or die("socket_create() failed:" . socket_strerror(socket_last_error()));

// 设置阻塞模式

socket_set_block($socket)

    or die("socket_set_block() failed:" . socket_strerror(socket_last_error()));  

// 绑定到端口

socket_bind($socket, $host, $port)

    or die("socket_bind() failed:" . socket_strerror(socket_last_error()));

// 开始监听

socket_listen($socket, 4)

    or die("socket_listen() failed:" . socket_strerror(socket_last_error()));

echo "Binding the socket on $host:$port ... \n";

while (true) {

    // 接收连接请求并调用一个子连接Socket来处理客户端和服务器间的信息

    if (($msgsock = socket_accept($socket)) < 0) {

        echo "socket_accept() failed:" . socket_strerror(socket_last_error());

    }else{

        // 读数据

        $out = '';

        while($buf = socket_read($msgsock,8192)){

            $out .= $buf;

        }

        // 写数据

        $in = "数据是 $out";

        socket_write($msgsock, $in, strlen($in));

    }

    // 结束通信

    socket_close($msgsock);

}

socket_close($socket);

?>

<?php

set_time_limit(0);

$host = "127.0.0.1";

$port = 12387;

// 创建一个tcp流

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)

    or die("socket_create() failed:" . socket_strerror(socket_last_error()));

echo "try to connect to $host:$port...\n";

$result = socket_connect($socket, $host, $port)

    or die("socket_connect() failed:" . socket_strerror(socket_last_error()));

$in = "hello \n";

if(!socket_write($socket, $in, strlen($in))) {

    echo "socket_write() failed:" . socket_strerror($socket);

}else {

    echo "发送成功！\n";

}

$out = '';

while($buf = socket_read($socket, 8192)) {

    $out .= $buf;

}

echo "接受内容为：$out \n";

socket_close($socket);

?>