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<?php class CantUnserializeThis extends ArrayObject { } $className = 'CantUnserializeThis'; $serialized = serialize(new ArrayObject()); $chunks = explode(':', $serialized); $serializedValuesChunks = implode(':', array_slice($chunks, 3)); var_dump(unserialize(sprintf( 'C:%d:"%s":%s', strlen($className), $className, $serializedValuesChunks ))); var_dump(unserialize(sprintf( 'O:%d:"%s":%s', strlen($className), $className, $serializedValuesChunks )));

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