(PHP 5, PHP 7) Returns the MySQL client version as an integer

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

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

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

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

(PHP 5 < 5.3.0) Enable reads from master bool

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

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

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

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