Online PHP editor | output for nhKJu

<?php class A extends \stdClass { public int $i = 42; public function __unserialize($properties) { foreach ($properties as $key => $property) { $this->$key = $property; } } } $holder = []; for ($i = 0; $i < 10000; $i++) { $holder[] = new A; } var_dump(memory_get_usage()); foreach ($holder as $obj) { } var_dump(memory_get_usage()); $unserialized_holder = []; foreach ($holder as $obj) { $unserialized_holder[] = \unserialize(\serialize($obj)); } unset($holder); var_dump(memory_get_usage());