MongoDB\BSON\Undefined::__construct

(mongodb >=1.4.0)

MongoDB\BSON\Undefined::__construct — Construct a new Undefined (unused)

说明

final private MongoDB\BSON\Undefined::__construct ( )

MongoDB\BSON\Undefined objects are created through conversion from a deprecated BSON type and cannot be constructed directly.

参数

此函数没有参数。