--TEST-- MongoDB\BSON\Symbol serialization (__serialize and __unserialize) --FILE-- symbol; var_dump($symbol = $test); var_dump($s = serialize($symbol)); var_dump(unserialize($s)); ?> ===DONE=== --EXPECTF-- object(MongoDB\BSON\Symbol)#%d (%d) { ["symbol"]=> string(11) "symbolValue" } string(63) "O:19:"MongoDB\BSON\Symbol":1:{s:6:"symbol";s:11:"symbolValue";}" object(MongoDB\BSON\Symbol)#%d (%d) { ["symbol"]=> string(11) "symbolValue" } ===DONE===