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....





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