If you want to develop a professional business - enterprise application I
suggest you research books related to Database Design and Development, and
Business Systems Analysis.

UML or Unified Modeling Language will help you with database design and
system design. ERD - Entity Relationship Diagrams are the bassis of
understading weather you have a good dtabse design. The  RDBMS - Relational
Database Management System.

Other models will help you understand the flow of your programme before you
start and development. Inorder to have a good system you have to have a good


Through this you will learn other things such as SDLC - Software Develpment
Life Cycle. There are many diffrent models you may use to develop an
profesional application. In the end its up to you to choose.



On Tue, Jun 2, 2009 at 6:50 AM, Angus Mann <angusm...@pobox.com> wrote:

> Hi all.
> I'm working on a PHP project for my own personal business use. It will
> handle billing and invoices as well as payments and time management,
> bookings, appointments and a few more. I may add things like personal
> messaging between the various users and a customer login to check on the
> progress of their accounts.
> It is a big project and will probably take a year or so to complete in my
> spare time.
> I have made a couple of starts but I have no experience in creating such
> large applications and I find I often end up with spaghetti code. I've tried
> using session variables to keep track of where and what the program is doing
> but there are so many permuations and combinations I found myself writing
> endless streams of if's, and's and or's just to figure out what page to
> display.
> The code is not the probblem for me...it's the flow and organization of the
> code.
> Can anybody point me to a good book or tutorial that lays down the
> principles and gives some suggestions for integrating the many subroutines
> of a large application? I want to make the code readable and logical in its
> flow, and avoid repetition of code segments.
> Much appreciated.
> Angus
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