(mongodb >=1.4.0)
BSON type for the "Undefined" type. This BSON type is deprecated, and this class can not be instantiated. It will be created from a BSON undefined type while converting BSON to PHP, and can also be converted back into BSON while storing documents in the database.
版本 | 说明 |
---|---|
PECL mongodb 2.0.0 |
This class no longer implements the Serializable interface. |
PECL mongodb 1.12.0 | Implements Stringable for PHP 8.0+. |