(PECL mongo >=1.5.0) Get the write concern for this collection

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

(PECL mongo >= 1.0.9) Creates a new 32-bit integer.

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Free result memory

(PECL maxdb >= 1.0) Check if there any more query results from a multi query

(PHP 5, PHP 7, PECL OCI8 >= 1.1.0) Returns the number of result columns in a statement

(PHP 4, PHP 5, PHP 7, PECL OCI8 >= 1.0.0) Alias of

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Change logged in user of the active connection

(PECL mongo >= 1.3.0) Sets a callback function to be invoked for events

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Get first tuple from relation