(PHP 5, PHP 7) Returns the number of warnings from the last query for the given link

(PECL mongo >= 1.0.8) Create a dummy MongoId

(PECL ibm_db2 >= 1.0.0) Returns a result set listing the tables and associated privileges in a database

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Enable or disable autocommit

(PHP 4, PHP 5, PECL odbtp >= 1.1.1) Select MS SQL database

(PHP 4, PHP 5, PHP 7) Get result data string

(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres >= 1.0.0) Test if a field is nullable

(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres >= 1.0.0) Get the type of a field in a query result

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

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