Handling Complex WHERE clauses with a PHP Query Builder

Question

There are several ActiveRecord styled query builder libraries out there. Some are stand alone and some come built into frameworks. However, they really have trouble with WHERE a

Answer 1

SQLAlchemy's API is the best one I've worked with so far. It's a Python-library, but you can still be inspired by it. It's not only for WHERE-clauses --- the entire SQL query (be it a select or DML) is expressed with a data structure that is easily modifiable.

(I'm referring to its SQL-toolkit, not the ORM-parts. :-)