PHP financial class, using XIRR function
<p>I'm using <a href="http://www.phpclasses.org/package/892-PHP-Financial-functions-with-the-Excel-function-names-.html" rel="nofollow">this financial class</a> for calculating XIRR value of cash flows. But there is a problem, that occurs when the calculated value should be less than -57,60%. Instead of lets say -60% it returns something like -1.571.465.320.791.475.063.612.392.992.979.424.882.196.480,00%</p>

<p>Is there a way to fix this?</p>

<p>Thank you.</p>
