(PHP 5 >= 5.0.5, PHP 7) Sets the default client character set

(PHP 5, PHP 7) Returns the version of the MySQL server

(PHP 5, PHP 7) Selects the default database for database queries

(PHP 5, PHP 7) Returns the current row of a result set as an object

(PHP 5, PHP 7) Pings a server connection, or tries to reconnect if the connection has gone down

(PHP 5, PHP 7) Get the number of fields in a result

(PHP 5, PHP 7) Transfers a result set from a prepared statement

(PHP 5 >= 5.3.0, PHP 7) Gets a result set from a prepared statement

(PHP 5, PHP 7) Fetch a result row as an associative array

(PHP 5, PHP 7) Unsets user defined handler for load local infile command