php – 即使关闭SSH终端后,如何保持websocket服务器运行？

如果您使用的是symfony2,则可以使用Process Component.

// 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";
}

如果您使用的是原生PHP,请不要担心,popen是您的朋友！

// 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/',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库用于处理守护进程.谷歌搜索“PHP守护进程”将给你很多指示.