用PHP的socket实现客户端到服务端的通信实例详解

一、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端口进行通信 
    $port = 111; 
    //创建SOCKET 
    if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) < 0) { 
        echo "socket创建失败原因 " . socket_strerror($sock) . "\n"; 
    } 

    if (($ret = socket_bind($sock, $address, $port)) < 0) { 
        echo "创建套接字失败原因 " . socket_strerror($ret) . "\n"; 
    } 
    //监听 
    if (($ret = socket_listen($sock, 5)) < 0) { 
        echo "监听失败原因 " . socket_strerror($ret) . "\n"; 
    } 
    do { 
      //接收命令  
      if (($msgsock = @socket_accept($sock)) < 0) { 
        echo "命令接收失败原因: " . socket_strerror($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); 
    ?> 

二、client.php客户端:

    <?php 
    error_reporting(E_ALL); 
    //端口111 
    $service_port = 111; 
    //本地 
    $address = 'localhost'; 
    //创建 TCP/IP socket 
    $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); 
    if ($socket < 0) { 
        echo "socket创建失败原因: " . socket_strerror($socket) . "\n"; 
    } else { 
        echo "OK，HE HE.\n"; 
    } 
    $result = socket_connect($socket, $address, $service_port); 
    if ($result < 0) { 
        echo "SOCKET连接失败原因: ($result) " . socket_strerror($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信

具体操作,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,会得到服务端的回应....

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。