MongoDB\BSON\Undefined::__toString

(mongodb >=1.4.0)

MongoDB\BSON\Undefined::__toStringReturns an empty string

说明

final public MongoDB\BSON\Undefined::__toString ( ) : string

参数

此函数没有参数。

返回值

Returns an empty string.

User Contributed Notes

There are no user contributed notes for this page.