(PHP 5 >= 5.3.0, PHP 7) Returns client per-process statistics

(PHP 5, PHP 7) Returns whether thread safety is given or not

(PHP 5, PHP 7) Returns a string description of the last connect error

(PHP 5 >= 5.3.0, PHP 7) Get result from async query

(PHP 5, PHP 7) Send the query and return bool

(PHP 5 >= 5.5.0, PHP 7) Removes the named savepoint from the set of savepoints of the current transaction

(PHP 5, PHP 7) Dump debugging information into the log

(PHP 5, PHP 7) Returns the error code from last connect call

(PHP 5, PHP 7) Returns the auto generated id used in the last query

(PHP 5, PHP 7) Transfers a result set from the last query