(PHP 5, PHP 7) Get the ID generated from the previous INSERT operation

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

(PHP 5, PHP 7) Binds variables to a prepared statement as parameters

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

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

(PHP 5, PHP 7) Set result pointer to a specified field offset

(PHP 5 >= 5.1.0, PHP 7) Get result of SHOW WARNINGS

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

(PHP 5 >= 5.5.0, PHP 7) Starts a transaction

(PHP 5, PHP 7) Prepare an SQL statement for execution