(PHP 5 >= 5.1.3, PHP 7, PECL pdo >= 1.0.3) Return an array of available PDO drivers

(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.1.0) Fetch extended error information associated with the last

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

(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.2.4) Fetches the next row and returns it as an object.

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

(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.2.0) Returns metadata for a column in a result set

(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.2.0) Set a statement attribute

(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.2.0) Executes an SQL statement, returning a result set as a PDOStatement

(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.2.0) Advances to the next rowset in a multi-rowset statement handle

(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.1.0) Returns an array containing all of the result set rows