Extended MySQLi implements a MySQL database access wrapper using the MySQLi extension. It is based on the Reduced MySQLi class originally written by Mertol Kasanan. This version can account the memory usage and log the executed queries in the current page. It can also cache the query results in an XML file.
Lightweight MVC is a PHP implementation of the MVC design pattern. It is small and ideal for learners. There is no view loader, so all public methods and variables inside the controllers will be exposed to the views. It uses a library system to make it easy to move your codebase to and from other MVC implementations.
fkchk is a MySQL InnoDB/XtraDB foreign key checker and repairer. It is useful if you suspect that your database's foreign keys may be broken, or if you disable foreign key checks and now want to be sure that the data is consistent. It is also useful if you have suffered a performance hit and want to check the consistency of foreign keys to verify that they're not the reason. It can attempt to repair any issues it finds, but this option should not be used and is only implemented for testing purposes.