Symfony2流程不会实时提供反馈

Question

my idea is to start a minecraft server with the Symfony2 Process Class and want to give feedback to me in real time. So, like described in the Process cookbook part , I try the following code:

$process = new Process('sudo java -jar -Xms512M -Xmx1G ../server/minecraft_server.jar');
    $process->setTimeout(null);
    $process->run(function ($type, $buffer) {
        if ('err' === $type) {
            echo 'ERR > '.$buffer;
        } else {
            echo 'OUT > '.$buffer;
        }
    });

Because of some permission issues with the apache2 user i modified the sudoers file with this: www-data ALL = (myspecialUser) NOPASSWD: /usr/bin/java
so the www-data user can run the java command.

The server is starting in the background, but my problem is now that I'm not getting any real-time output. Only if I shutdown (or kill) the minecraft server process I get the output.

Any suggestions how to get a real-time output?

Answer 1

Instead of calling the run() method, you should try with the start() one:

$process = new Process('sudo java -jar -Xms512M -Xmx1G ../server/minecraft_server.jar');
$process->setTimeout(null);
$process->start(function ($type, $buffer));

echo 'OUT >' . $process->getOutput();

http://api.symfony.com/master/Symfony/Component/Process/Process.html#method_start

http://api.symfony.com/master/Symfony/Component/Process/Process.html#method_getOutput