Re: [PHP] IRR Function in PHP -- MORE Info

2003-02-17 Thread Marco Tabini
Hey Jonathan-- This page has an excellent description of what the IRR is and how it's calculated. http://invest-faq.com/articles/analy-int-rate-return.html I'd love to help more than this, but this is quite a bit of work and without the actual spreadsheet I'm not sure that I'd be able to give

Re: [PHP] IRR Function in PHP -- MORE Info

2003-02-17 Thread Jonathan Pitcher
I received an Excel Spread sheet with built in calculations for creating our rate sheets that we pass out to our branches and so on. In this rate sheet to calculate our APR the spread sheet calls built in Finance Functions IRR Internal Rate of Return PMT Calculates a Payment PV Calculates Prese

Re: [PHP] IRR Function in PHP

2003-02-17 Thread Marco Tabini
If I may barge in... The IRR represents the actual return of an investment over an arbitrary period of time (usually annualized). Say, for example, that you invest $100 and, after two years, you have $120. Your overall return is 20%. If your interest rate was constant over the two-year period and

Re: [PHP] IRR Function in PHP

2003-02-17 Thread Greg Donald
On Mon, 17 Feb 2003, Jonathan Pitcher wrote: >This process involves an IRR Calculation. Or Internal Rate of Return. Sorry, I don't think there are any accountants lurking on the list, so please explain what the actual calculation for an IRR should be. -- Greg Donald http://destiney.com --

Re: [PHP] IRR Function in PHP

2003-02-17 Thread Marco Tabini
On Mon, 2003-02-17 at 16:44, Jonathan Pitcher wrote: > We are getting ready to automate a process that was currently done in > Excel to a Web page. > > This process involves an IRR Calculation. Or Internal Rate of Return. > > I have looked at PHP.net and spent the last couple hours searching for

[PHP] IRR Function in PHP

2003-02-17 Thread Jonathan Pitcher
We are getting ready to automate a process that was currently done in Excel to a Web page. This process involves an IRR Calculation. Or Internal Rate of Return. I have looked at PHP.net and spent the last couple hours searching for a pre-built function to handle this but have come up blank. Ha