Some links to reading material on OO PHP http://code.tutsplus.com/tutorials/object-oriented-php-for-beginners–net-12762 http://knowpapa.com/procedural-to-oop/ http://www.davegardner.me.uk/blog/2010/11/21/why-you-should-always-use-php-interfaces/ Defining relationships in databases http://blog.andreasartori.me/defining-relationships-among-database-tables-with-eloquent/
Some useful links: http://laravel.com/docs/5.0/helpers#urls call custom files (php or otherwise) into a laravel project. For me app.php file to which I added ‘Helpers’ => ‘app\TradeLogic\engine’