<?php
class ClassName1
{
    function __destruct() {
        print "Destroying " . __CLASS__ . "\n";
    }
}

$fiber = new Fiber(
    function() {
        $d1 = new ClassName1;

        // Resulted output
        $d2 = \WeakReference::create(\Fiber::getCurrent())->get();
        
        // Expected output
        //\WeakReference::create(\Fiber::getCurrent())->get();

        Fiber::suspend();
        return ;
    }
);
echo "1\n";
$fiber->start();

echo "2\n";
$fiber = null;

echo "3\n";