php中的tcp通信

任务：做一个socket服务器发送消息，并能够接受信息
实现:cmd命令：netstat -an 查看自己开放端口.ip地址的后面的就是端口号.

//做一个socket连接，发布tcp命令，然后再过一分钟读取数据库test,user表
if(!extension_loaded('sockets'))
{
dl('php_sockets.dll');
}
// server
error_reporting(E_ALL);
set_time_limit(0);
ob_implicit_flush();
$address = $_POST['hostip'];
$port = $_POST["hostport"];
//$address = '192.168.0.163';
//$port = 3000;
$socket = null;
if (($socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
   echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
}
$res = socket_connect($socket,   $address,   $port);

   /* Send instructions. */
    $msg = "\nWelcome to the PHP Test Server. \n" .
        "To quit, type 'quit'. To shut down the server type 'shutdown'.\n";
    socket_write($socket, $msg, strlen($msg));
socket_close($socket);