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<?php class a { } class b { } var_dump(serialize(new b)); $as = 'O:1:"a":0:{}'; $bs = 'O:1:"b":0:{}'; var_dump(unserialize($as, array('allowed_asss' => 'a') )); var_dump(unserialize($bs, array('allowed_asss' => 'a') ));

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46.79 ms | 402 KiB | 5 Q