(PECL mongo >=1.5.0) Gets information about the cursor's creation and iteration

(PECL ibm_db2 >= 1.0.0) Executes an SQL statement directly

(PECL maxdb >= 1.0) Returns the version of the MaxDB server as an integer

(PECL paradox >= 1.0.0) Create a new paradox object

(PHP 5, PHP 7, PECL OCI8 >= 1.1.0) Trims elements from the end of the collection

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

(PHP 4, PHP 5, PHP 7) Open a PostgreSQL connection

(PECL ibm_db2 >= 1.0.0) Returns the last connection error message and SQLCODE value

(PHP 5, PHP 7) Returns the error code for the most recent statement call

(PHP 5.3.2, PHP 7, PECL OCI8 >= 1.4.0) Sets the client identifier