php socket

<?php
  set_time_limit(0);

  $host = "127.0.0.1";
  $port = 2046;

  $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)or die("Could not create socket\n");

  if($socket){
    $connection = socket_connect($socket, $host, $port) or die("Could not connet server\n");
 
    socket_write($socket, "Action: Login\r\nActionID: 123\r\nUsername: admin\r\nSecret: password\r\n\r\n") or die("Write failed\n"); // 數據傳送 向服務器發送消息

    while($bunf = socket_read($socket, 1024, PHP_NORMAL_READ)){
       echo "BUFF Content:".$bunf;
     }
   socket_write($socket,"Action: Logoff\r\nActionID: 123\r\n\r\n");
   socket_close($socket);
  }
?>