(PECL mongo >=1.1.0)
Returns the address being used by this for slaveOkay reads
public string Mongo::getSlave ( void )
This finds the address of the secondary currently being used for reads. It is a read-only method: it does not change anything about the internal state of the object.
When you create a connection to the database, the driver will not immediately decide on a secondary to use. Thus, after you connect, this