(PHP 4 >= 4.0.7, PHP 5, PECL odbtp >= 1.1.1) Converts a 16 byte binary GUID to a string

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

(PHP 5, PHP 7) Opens a connection to a mysql server

(PECL maxdb >= 1.0) Returns result set metadata from a prepared statement

(PECL ibm_db2 >= 1.0.0) Returns an object with properties representing columns in the fetched row

(PHP 5, PHP 7) Rolls back current transaction

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

(PHP 4, PHP <=5.2.0) Releases resources for the query

(PHP 4, PHP 5, PHP 7) Number of columns in a result

(PHP 4, PHP <=5.2.0) Return the content of the char object