ajillion/PHP-MySQLi-Database-Class — pull request #93 by nenuadrian (2014-03-24 23:54:05+00:00)
Title: Allowing null in WHERE syntax

Basically you can insert NULL's into database, but you cannot select rows by "where column is null".

The right syntax to do that (after a few tens of minutes of research) is column <=> (null binded variable).

Anyway. This fix allows you to use the syntax normally ->where("column", NULL) and it will create the proper prepared statement.