(PECL maxdb >= 1.0) Returns a string description for last statement error

(PECL mongo >= 1.2.3) Returns information about all connection pools.

(PECL maxdb >= 1.0) Escapes special characters in a string for use in an SQL statement, taking into account

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Stop a database on local or remote server

(PECL mongo >=0.9.0) Drops this collection

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Returns the number of fields in a result

(PHP 4, PHP 5, PHP 7) Fetch next key string dba_nextkey

(PHP 4, PHP 5, PHP 7) Synchronize database bool

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Open relation file

(PHP 5, PHP 7) Fetch a row from an InterBase database