(PECL mongo >=1.5.0) Returns the current element

(PECL mongo >=1.3.0) Perform an aggregation using the aggregation framework

(PECL mongo >= 0.8.3) Creates a new code object

(PECL mongo >=0.9.0) Create a new GridFS file

(PECL mongo >=1.5.0) Set the write concern for this database

(PECL mongo >= 0.8.1) Returns a string representation of this date

(PECL mongo >=1.1.0) Returns the address being used by this for slaveOkay reads

(PECL mongo >=0.9.0) Gives the database a hint about the query

(PECL mongo >=1.0.11) Limits the number of elements returned in one batch.

(PECL mongo >=0.9.0) Returns information about indexes on this collection