(PHP 5, PHP 7) Execute a maintenance command on the database server

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Commits a transaction to the database

(No version information available, might only be in Git) Get an iterator

(PECL mongo >= 0.8.1) Creates a new regular expression

(PHP 5 >= 5.3.0, PHP 7) Returns the name of the nth column

(PECL mongo >= 1.5.0) Description public

(PHP 5, PHP 7) Prepare an SQL statement for execution

(PECL maxdb >= 1.0) Resets a prepared statement

(PECL ingres >= 1.1.0) Get a cursor name for a given result resource

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