3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); class Foo { protected $foo = 123; } class Bar {} $foo = new Foo(); $serializedFoo = serialize($foo); $unserializedFoo = unserialize($serializedFoo, ['allowed_classes' => [Bar::class]]); var_dump($serializedFoo, $unserializedFoo);

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