A new note on the Internet Super Hero blog talks about a new improvement to the mysqlnd driver support a memory dump option for mysqli_debug.

Andrey has implemented a little mysqlnd only addition to mysqli_debug(): 'm' - dump memory information. It works like the other options described in PHP: Debugging ext/mysqli and mysqlnd with the only difference that it is only available with mysqlnd.

A comparison of the "before option 'm'" and "after option 'm'" is also included.