【socket】用PHP的socket实现客户端到服务端的通讯

1、server.php服务端：

 <?php
 error_reporting(E_ALL);
 set_time_limit(0);
 ob_implicit_flush();
 //本地IP
 $address = 'localhost';
 //设置用111端口进行通讯
 $port = 111;
 //建立SOCKET
 if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) < 0) {
         echo "socket建立失败缘由 " . socket_strerror($sock) . "\n";
 }

 if (($ret = socket_bind($sock, $address, $port)) < 0) {
         echo "建立套接字失败缘由 " . socket_strerror($ret) . "\n";
 }
 //监听
 if (($ret = socket_listen($sock, 5)) < 0) {
         echo "监听失败缘由 " . socket_strerror($ret) . "\n";
 }
 do {
     //接收命令
     if (($msgsock = @socket_accept($sock)) < 0) {
         echo "命令接收失败缘由: " . socket_strerror($msgsock) . "\n";
         break;
     }
     $msg = "\nPHP Test Server. \n" ."用quit,shutdown,sun...等命令测试.\n";

     @socket_write($msgsock, $msg, strlen($msg));

     do {
         if (false === ($buf = @socket_read($msgsock, 2048, PHP_NORMAL_READ))) {
                 echo "socket_read() failed: reason: " . socket_strerror($ret) . "\n";
                 break 2;
         }
         if (!$buf = trim($buf)) {
                 continue;
         }
         if ($buf == 'quit') {
                 break;
         }
         if ($buf == 'shutdown') {
                 socket_close($msgsock);
                 break 2;
         }
         if ($buf == 'sun') {
                 echo'what are you doing?';
         }
         $talkback = "Backinformation : '$buf'.\n";
         socket_write($msgsock, $talkback, strlen($talkback));
         echo "$buf\n";
     } while (true);

     socket_close($msgsock);

 } while (true);

 socket_close($sock);
 ?>

2、client.php客户端:

 <?php
 error_reporting(E_ALL);
 //端口111
 $service_port = 111;
 //本地
 $address = 'localhost';
 //建立 TCP/IP socket
 $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
 if ($socket < 0) {
         echo "socket建立失败缘由: " . socket_strerror($socket) . "\n";
 } else {
         echo "OK，HE HE.\n";
 }
 $result = socket_connect($socket, $address, $service_port);
 if ($result < 0) {
         echo "SOCKET链接失败缘由: ($result) " . socket_strerror($result) . "\n";
 } else {
         echo "OK.\n";
 }
 //发送命令
 $in = "HEAD / HTTP/1.1\r\n";
 $in .= "Connection: Close\r\n\r\n";
 $out = '';
 echo "Send Command..........";
 $in = "sun\n";
 socket_write($socket, $in, strlen($in));
 echo "OK.\n";
 echo "Reading Backinformatin:\n\n";
 while ($out = socket_read($socket, 2048)) {
         echo $out;
 }
 echo "Close socket........";
 socket_close($socket);
 echo "OK,He He.\n\n";
 ?>

这两段代码是简单介绍用PHP实现客户端和服务端的通讯
client.php
server.php
具体操做,在DOS下用PHP命令打开SERVER,处于监听状态..
再打开一个DOS窗口,用PHP命令打开CLIENT,会获得服务端的回应....