(PECL mongo >=1.5.0) Creates an index on the specified field(s) if it does not already exist.

(PECL mongo >=0.9.0) Validates this collection

(PECL mongo >=0.9.0) Inserts multiple documents into this collection

(PECL mongo >=1.3.0) Set the read preference for this collection

(PECL mongo >=0.9.0) Saves a document to this collection

(PECL mongo >=1.5.0) Execute an aggregation pipeline command and retrieve results through a cursor

(PECL mongo >=0.9.0) Drops this collection

(PECL mongo >=0.9.0) Inserts a document into the collection

(PECL mongo >=1.2.11) Retrieve a list of distinct values for the given key across a collection.

(PECL mongo >=0.9.0) Creates an index on the specified field(s) if it does not already exist.