--TEST-- MongoDB\BSON\MinKey serialization --FILE-- <?php var_dump($minkey = new MongoDB\BSON\MinKey); var_dump($s = serialize($minkey)); var_dump(unserialize($s)); ?> ===DONE=== <?php exit(0); ?> --EXPECTF-- object(MongoDB\BSON\MinKey)#%d (%d) { } string(31) "C:19:"MongoDB\BSON\MinKey":0:{}" object(MongoDB\BSON\MinKey)#%d (%d) { } ===DONE===