(PECL mongo >=1.6.0) Get the read preference for this query

(PECL mongo >=1.5.0) Gets information about the cursor's creation and iteration

(PECL mongo >=1.5.0) Sets a client-side timeout for this query

(PECL mongo >=1.5.0) Limits the number of elements returned in one batch.

(PECL mongo >=1.5.0) Checks if there are results that have not yet been sent from the database

(PECL mongo >=1.6.0) Set the read preference for this query