(PECL mongo >=1.1.0)
MongoCollection::setSlaveOkay — Change slaveOkay setting for this collection
$ok= true ] )
See the query section of this manual for information on distributing reads to secondaries.
If reads should be sent to secondary members of a replica set for all possible queries using this MongoCollection instance.
Returns the former value of slaveOkay for this instance.