(PECL mongo >=1.1.0)
Mongo::getSlave — Returns the address being used by this for slaveOkay reads
This finds the address of the slave currently being used for reads. It is a read-only method: it does not change anything about the internal state of the object.
See the query section of this manual for information on distributing reads to slaves.
У этой функции нет параметров.
The address of the slave this connection is using for reads.
This returns NULL if this is not connected to a replica set or not yet initialized.