【socket】用PHP的socket实现客户端到服务端的通信

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) . "
";
}

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

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

    do {
        if (false === ($buf = @socket_read($msgsock, 2048, PHP_NORMAL_READ))) {
                echo "socket_read() failed: reason: " . socket_strerror($ret) . "
";
                break 2;
        }
        if (!$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'.
";
        socket_write($msgsock, $talkback, strlen($talkback));
        echo "$buf
";
    } 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) . "
";
} else {
        echo "OK，HE HE.
";
}
$result = socket_connect($socket, $address, $service_port);
if ($result < 0) {
        echo "SOCKET连接失败原因: ($result) " . socket_strerror($result) . "
";
} else {
        echo "OK.
";
}
//发送命令
$in = "HEAD / HTTP/1.1
";
$in .= "Connection: Close

";
$out = '';
echo "Send Command..........";
$in = "sun
";
socket_write($socket, $in, strlen($in));
echo "OK.
";
echo "Reading Backinformatin:

";
while ($out = socket_read($socket, 2048)) {
        echo $out;
}
echo "Close socket........";
socket_close($socket);
echo "OK,He He.

";
?>

这两段代码是简单介绍用PHP实现客户端和服务端的通信
client.php
server.php
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....