即使关闭 SSH 终端后，如何保持 Websocket 服务器运行？

因此，我将 Ratchet 与 PHP 结合使用，并且目前已将一个成功的 websocket 示例上传到我的服务器。

它在我进入 SSH 后起作用，然后只需手动运行“php bin/chat-server.php”。

我想知道的是，在商业情况下，我如何保持聊天服务器运行？

Thanks.

制作一个守护进程。

如果您使用的是 symfony2，则可以使用流程组件 http://symfony.com/doc/current/components/process.html.

// in your server start command
$process = new Process('/usr/bin/php bin/chat-server.php');
$process->start();
sleep(1);
if ($process->isRunning()) {
    echo "Server started.\n";
} else {
    echo $process->getErrorOutput();
}

// in your server stop command
$process = new Process('ps ax | grep bin/chat-server.php');
$process->run();
$output = $process->getOutput();
$lines = preg_split('/\n/', $output);
// kill everything (there can be multiple processes if they are spawned)
$stopped = False;
foreach ($lines as $line) {
    $ar = preg_split('/\s+/', trim($line));
    if (in_array('/usr/bin/php', $ar)
        and in_array('bin/chat-server.php', $ar)) {
        $pid = (int) $ar[0];
        posix_kill($pid, SIGKILL);
        $stopped = True;
    }
}
if ($stopped) {
    echo "Server stopped.\n";
} else {
    echo "Server not found. Are you sure it's running?\n";
}

如果您使用本机 PHP，请不要害怕，popen http://www.php.net/manual/en/function.popen.php是你的朋友！

// in your server start command
_ = popen('/usr/bin/php bin/chat-server.php', 'r');
echo "Server started.\n";

// in your server stop command
$output = array();
exec('ps ax | grep bin/chat-server.php', &$output);
$lines = preg_split('/\n/', $output);
// kill everything (there can be multiple processes if they are spawned)
$stopped = False;
foreach ($lines as $line) {
    $ar = preg_split('/\s+/', trim($line));
    if (in_array('/usr/bin/php', $ar)
        and in_array('bin/chat-server.php', $ar)) {
        $pid = (int) $ar[0];
        posix_kill($pid, SIGKILL);
        $stopped = True;
    }
}
if ($stopped) {
    echo "Server stopped.\n";
} else {
    echo "Server not found. Are you sure it's running?\n";
}

当然还有其他有用的 PHP 库可用于处理守护进程。谷歌搜索“php daemon”会给你很多提示。