Php/docs/mongodb-bson-dbpointer.tostring
From Get docs
MongoDB\BSON\DBPointer::__toString
(mongodb >=1.4.0)
MongoDB\BSON\DBPointer::__toString — Returns an empty string
Description
final public MongoDB\BSON\DBPointer::__toString ( ) : string
Parameters
This function has no parameters.
Return Values
Returns an empty string.