--TEST-- MongoDB\BSON\ObjectId::getTimestamp --FILE-- <?php date_default_timezone_set( "UTC" ); $objectid = new MongoDB\BSON\ObjectId('564b07d6619d4b3d668b45e3'); $ts = $objectid->getTimestamp(); echo $ts, "\n"; echo date_create( "@{$ts}" )->format( "Y-m-d H:i:s" ), "\n"; ?> --EXPECT-- 1447757782 2015-11-17 10:56:22