pixie - Database query builder for PHP, framework agnostic, lightweight and expressive.
A lightweight, expressive, framework agnostic query builder for PHP it can also be referred as a Database Abstraction Layer. Pixie supports MySQL, SQLite and PostgreSQL and it takes care of query sanitization, table prefixing and many other things with a unified API. At least PHP 5.3 is required. The syntax is quite similar to Laravel's query builder.