socket同时只能有一个客户端连接一个端口并往上面发送数据

$commonProtocol = getprotobyname("tcp");

$socket = socket_create(AF_INET, SOCK_STREAM, $commonProtocol);

@socket_bind($socket, '192.168.1.202', 8888);

@socket_listen($socket);

// Initialize the buffer

$buffer = "NO DATA";





while(true)

{

sleep(1);    

 // Accept any connections coming in on this socket



 $connection = @socket_accept($socket);

 printf("Socket connected\r\n");

 // Check to see if there is anything in the buffer

 if($buffer != "")

 {

  printf("Something is in the buffer...sending data...\r\n");

  @socket_write($connection, $buffer . "\r\n");

  printf("Wrote to socket\r\n");

 }

 else

 {

  printf("No Data in the buffer\r\n");

 }

 // Get the input

 while($data = @socket_read($connection, 14, PHP_NORMAL_READ))

 {

     

     if (!empty($data)){

         $buffer = $data;  



 //文件驱动模式 

      /*$f = fopen(dirname(__FILE__).'/file/'.date('YmdHis').'.txt','w');

    fwrite($f,$buffer); 

    fclose($f); */ 

 

   socket_set_nonblock($connection);

   socket_getpeername($connection,&$remoteIP,&$remotePort);

echo $remoteIP."\r\n";

echo $remotePort."\r\n";

 

 

 

 $data=str_split($buffer);

 

 print_r($data);

 

 foreach($data as $v){

     echo dechex(ord($v))."\t";

     }

 echo "\r\n";

 

     }

  





  

 }

 @socket_close($connection);

 printf("Closed the socket\r\n\r\n");

 

 

}