(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.2.0) Returns the number of columns in the result set

(PHP 5, PHP 7) Check if there are any more query results from a multi query

(PHP 5, PHP 7, PECL OCI8 >= 1.1.0) Connect to the Oracle server using a unique connection

(PHP 5 >= 5.1.0, PHP 7) Submits a command and separate parameters to the server without waiting for the result(s)

(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.1.0) Rolls back a transaction

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Creates an empty copy of a relation with default indices

(PECL mongo >=1.3.0) Creates a new database connection object

(PHP 4, PHP 5, PHP 7) Send mSQL query resource

(PHP 5, PHP 7, PECL OCI8 >= 1.1.0) Closes an Oracle connection

(PHP 4 >= 4.0.7, PHP 5, PHP 7) Get the status for a given database