Online PHP editor | refs for GmmmL

<?php class Test implements Serializable { private $foo = "Test"; public function __serialize(): array { return [ 'foo' => $this->foo ]; } public function __unserialize( array $data ): void { $this->foo = $data['foo']; } public function serialize() { return serialize( $this->__serialize() ); } public function unserialize( $serialized ): void { $this->__unserialize( unserialize( $serialized ) ); } } echo serialize(new Test()) . "\n"; // PHP 7.00 - 7.3.33 echo get_class(unserialize('C:4:"Test":27:{a:1:{s:3:"foo";s:4:"Test";}}')) . "\n"; // PHP 7.4.0 - 8.1.9 echo get_class(unserialize('O:4:"Test":1:{s:3:"foo";s:4:"Test";}')) . "\n";