//以上php为服务端，它将监听消息，直到按下：ctrl+c
while(true)
{
  //每5秒执行一次
  receive_message('127.0.0.1','85',5);
}
//自定义函数用于获取消息
function receive_message($ips教程erver,$portnumber,$nbsecondsidle)
{
  //创建socket
  $socket=stream_socket_server('tcp://'.$ipserver.':'.$portnumber, $errno, $errstr);
  if(!$socket)
  {
    //如果创建socket失败输出内容
    echo "$errstr ($errno)<br />n";
  }
  else
  {
    //如果创建成功则接受socket连接并获取信息
    while($conn=@stream_socket_accept($socket,$nbsecondsidle))
    {
      $message=read($conn,1024);
      echo 'i have received that : '.$message;
      fputs ($conn, "okn");
      fclose ($conn);
    }
    fclose($socket);
  }
}
//server结束
?>
<?php
//以下代码为客户端，它将发送信息并读取回复
send_message('127.0.0.1','85','message to send...');
//自定义函数，发送信息
function send_message($ipserver,$portserver,$message)
{
  $fp=stream_socket_client("tcp://$ipserver:$portserver", $errno, $errstr);
  if(!$fp)
  {
    echo "erreur : $errno - $errstr<br />n";
  }
  else
  {
    fwrite($fp,"$messagen");
    $response =  fread($fp, 4);
    if($response != "okn")
    {
      echo 'the command couldn't be executed...ncause :'.$response;
    }
    else
    {
      echo 'execution successfull...';
    }
    fclose($fp);
  }
}

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