(PHP 5 >= 5.5.0, PHP 7) Set a named transaction savepoint

(PHP 5, PHP 7) Asks the server to kill a MySQL thread

(PHP 5 < 5.3.0) Force execution of a query on a slave in a master/slave setup

(PHP 4, PHP <=5.2.0) Get the contents of sqlca.sqlerrd[0..5] after a query

(PECL tokyo_tyrant >= 0.1.0) Adds to a numeric key

(PECL ibm_db2 >= 1.0.0) Sets the result set pointer to the next row or requested row

(PHP 5, PHP 7, PECL OCI8 >= 1.1.0) Commits the outstanding database transaction

(PHP 4, PHP 5, PHP 7) Fetch row as object object

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Returns the error message from previous operation

(PHP 4, PHP 5, PHP 7) Sets minimum error severity