php 与 erlang 实现二进制通信

-module(server).-export([start/0]).-define( UINT, 32/unsigned-little-integer).-define( INT, 32/signed-little-integer).-define( USHORT, 16/unsigned-little-integer).-define( SHORT, 16/signed-little-integer).-define( UBYTE, 8/unsigned-little-integer).-define( BYTE, 8/signed-little-integer).-define( PORT, 5678).%% 启动服务并接受客户端的连接start() ->  {ok, LSock} = gen_tcp:listen(?PORT, [binary, {packet, 0},{active, false}]),  io:format("socket listen: ~p on ~p ~n",[LSock, ?PORT]),  accept(LSock).accept(LSock) ->  {ok, ASock} = gen_tcp:accept(LSock),  spawn(fun() -> server_loop(ASock) end),  accept(LSock).server_loop(ASock) ->  case gen_tcp:recv(ASock, 0) of    {ok, > = A} ->      io:format("recv data: ~p ~p ~p~n", [Len, Cmd, Contain]),      %%将接收到数据发送回客户端      gen_tcp:send(ASock, A),      server_loop(ASock);    {ok, Data} ->      io:format("recv unformated data: ~p~n", [Data]),      server_loop(ASock);    {error, _} ->      {ok, recv_error}    end.

<?php $timeout = 3;//超时时间：3秒$fp = fsockopen("tcp://127.0.0.1", 5678, $errno, $errstr, $timeout/* 连接超时时间 */);if (!$fp) {  echo "$errstr ($errno)<br />\n";} else {  stream_set_timeout($fp, $timeout);  //远程数据接收或发送超时时间  $format = "vva4";  $data = pack($format, 4, 10001, "abcd");  //$data 按照一定格式被打包成二进制数据  fwrite($fp, $data);  if (!feof($fp)) {    $rs = fread($fp, 1024);    //读取远程数据    if ($rs) {      $len = strlen($rs);      //$len 可以获取数据的长度，用以计算content的长度      //在这个例子中，content 的长度为 4      $format = "vlen/vcmd/a4content";      $data = unpack($format, $rs);      print_r($data);    } else {      echo "timeout!";    }  } else {    echo "timeout!";  }  fclose($fp);}?>

Array ( [len] => 4 [cmd] => 10001 [content] => abcd )