Serialized object singleton test

test1.php

<?php

class Depedency
{
    public $value;
}

class A
{
    public $dependency;

    public function setDependency($dependency)
    {
        $this->dependency = $dependency;
    }

}

class B
{
    public $dependency;

    public function setDependency($dependency)
    {
        $this->dependency = $dependency;
    }

}

$a = new A;
$b = new B;
$d = new Depedency;

$a->setDependency($d);
$b->setDependency($d);
$d->value = 10;

echo $a->dependency->value . PHP_EOL;
echo $b->dependency->value . PHP_EOL;
// 10
// 10

$saved = serialize([$a, $b, $d]);
file_put_contents('saved.php', $saved);