php-socket通信演示

client:

error_reporting(E_ALL);
set_time_limit(0);
echo "<h2>TCP/IP Connection</h2>\n";
$port = 1935;
$ip = "127.0.0.1";
/*
 +-------------------------------
 *    @socket连接整个过程
 +-------------------------------
 *    @socket_create
 *    @socket_connect
 *    @socket_write
 *    @socket_read
 *    @socket_close
 +--------------------------------
*/
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
// 第一个参数”AF_INET”用来指定域名;
// 第二个参数”SOCK_STREM”告诉函数将创建一个什么类型的Socket(在这个例子中是TCP类型),UDP是SOCK_DGRAM

if ($socket < 0) {
    echo "socket_create() failed: reason: " . socket_strerror($socket) . "\n";
} else {
    echo "OK.\n";
}
echo "试图连接 '$ip' 端口 '$port'...\n";
$result = socket_connect($socket, $ip, $port);
if ($result < 0) {
    echo "socket_connect() failed.\nReason: ($result) " . socket_strerror($result) . "\n";
} else {
    echo "连接OK\n";
}
$in = "Ho\r\n";
$in.= "first blood335555553\r\n";
$out = '';
if (!socket_write($socket, $in, strlen($in))) {
    echo "socket_write() failed: reason: " . socket_strerror($socket) . "\n";
} else {
    echo "发送到服务器信息成功！\n";
    echo "发送的内容为:<font color='red'>$in</font> <br>";
}
while ($out = socket_read($socket, 8192)) {
    echo "接收服务器回传信息成功！\n";
    echo "接受的内容为:", $out;
}
echo "关闭SOCKET...\n";
socket_close($socket);
echo "关闭OK\n";

server:

//确保在连接客户端时不会超时
set_time_limit(0);
$ip = '127.0.0.1';
$port = 1935;
/*
 +-------------------------------
 *    @socket通信整个过程
 +-------------------------------
 *    @socket_create
 *    @socket_bind
 *    @socket_listen
 *    @socket_accept
 *    @socket_read
 *    @socket_write
 *    @socket_close
 +--------------------------------
*/
/*----------------    以下操作都是手册上的    -------------------*/

if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) < 0) { // 创建一个Socket链接
    echo "socket_create() 失败的原因是:" . socket_strerror($sock) . "\n";
}

if (($ret = socket_bind($sock, $ip, $port)) < 0) { //绑定Socket到端口
    echo "socket_bind() 失败的原因是:" . socket_strerror($ret) . "\n";
}
if (($ret = socket_listen($sock, 4)) < 0) { // 开始监听链接链接
    echo "socket_listen() 失败的原因是:" . socket_strerror($ret) . "\n";
}
$count = 0;
do {
    if (($msgsock = socket_accept($sock)) < 0) { //堵塞等待另一个Socket来处理通信
        echo "socket_accept() failed: reason: " . socket_strerror($msgsock) . "\n";
        break;
    } else {
        //发送消息到客户端
        $msg = "测试成功！\n";
        socket_write($msgsock, $msg, strlen($msg)); 

        //接收客户端消息
        echo "测试成功了啊\n";
        $buf = socket_read($msgsock, 8192); // 获得客户端的输入
        $talkback = "收到的信息:$buf\n";
        echo $talkback;
        if (++$count >= 5) {
            break;
        };
    }
    //echo $buf;
    socket_close($msgsock);
} while (true);
socket_close($sock);

参考博主：http://www.cnblogs.com/nixi8/p/4904496.html