PHP做端口监听示例代码

<?php 
// Server
// 设置错误处理
error_reporting(E_ALL);
// 设置运行时间
set_time_limit(0);
// 起用缓冲
ob_implicit_flush();
$ip = "127.0.0.1"; // IP地址
$port = 1000; // 端口号
 
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); // 创建一个SOCKET
if ($socket)
    echo "socket_create() successed!n";
else
    echo "socket_create() failed:".socket_strerror($socket)."n";
 
$bind = socket_bind($socket, $ip, $port); // 绑定一个SOCKET
if ($bind)
    echo "socket_bind() successed!n";
else
    echo "socket_bind() failed:".socket_strerror($bind)."n";
 
$listen = socket_listen($socket); // 间听SOCKET
if ($listen)
    echo "socket_listen() successed!n";
else
    echo "socket_listen() failed:".socket_strerror($listen)."n";
 
while (true) {
    $msg = socket_accept($socket); // 接受一个SOCKET
    if (!$msg) {
        echo "socket_accept() failed:".socket_strerror($msg)."n";
        break;
    }
    $welcome = "Welcome to PHP Server!n";
    socket_write($msg, $welcome, strlen($welcome));
    while (true) {
        $command = strtoupper(trim(socket_read($msg, 1024)));
        if (!$command)
            break;
        switch ($command) {
            case "HELLO":
                $writer = "Hello Everybody!";
                break;
            case "QUIT":
                $writer = "Bye-Bye";
                break;
            case "HELP":
                $writer = "HELLOtQUITtHELP";
                break;
            default:
                $writer = "Error Command!";
        }
        socket_write($msg, $writer, strlen($writer));
        if ($command == "QUIT")
            break;
    }
    socket_close($msg);
}
socket_close($socket); // 关闭SOCKET
?>

<?php 
// Client
// 设置错误处理
error_reporting(E_ALL);
// 设置处理时间
set_time_limit(0);
 
$ip = "127.0.0.1"; // IP 地址
$port = 1000; // 端口号
 
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); // 创建一个SOCKET
if ($socket)
    echo "socket_create() successed!n";
else
    echo "socket_create() failed:".socket_strerror($socket)."n";
 
$conn = socket_connect($socket, $ip, $port); // 建立SOCKET的连接
if ($conn)
    echo "Success to connection![".$ip.":".$port."]n";
else
    echo "socket_connect() failed:".socket_strerror($conn)."n";
 
echo socket_read($socket, 1024);
 
$stdin = fopen('php://stdin', 'r');
while (true) {
    $command = trim(fgets($stdin, 1024));
    socket_write($socket, $command, strlen($command));
    $msg = trim(socket_read($socket, 1024));
    echo $msg."n";
    if ($msg == "Bye-Bye")
        break;
}
fclose($stdin);
socket_close($socket);
?>