Php pthreads和monolog

Question

I cannot use monolog logger inside Thread method run.

class MyThread extends Thread
{
    public function run()
    {
        echo 'hihi', PHP_EOL;
        $log = new Logger('MyApp');
        $log->pushHandler(
            new StreamHandler('php://stdout', Logger::INFO)
        );
        $log->addInfo("hoho");
        echo 'haha', PHP_EOL;
    }
}

$thread = new MyThread();

if ($thread->start()) {
    $thread->join();
    echo 'hehe', PHP_EOL;
}

Output:

hihi
hehe

Here PHP pthreads and SQLite3 and here pthread Thread objects reset their state somebody says that I can only use objects inerited from Stackable, Thread or Worker inside my class inherited from Thread. But what if I cannot change Logger class? I cannot use it?

I want to clarify: I cannot use object not inherited from Stackable, Thread or Worker inside class inherited from Thread at all? It is very strange. In other languages I can.

Win 7 x64 Ultimate, php 7 32 bit with thread safety.