Rounding errors

[arelgee]

http://www.are-l-gee.com/arelgeewy/invtools.html
Above is a link to my set of investor tools. I am having a devil of a time getting the averaging down php script to work right. I do all the calculations first, then use intval to round down. But the average stock price has to be rounded down to the nearest cent.
I seem to remember a round function somewhere but I only need it for one calculation. But when I use intval and then multiply, I get weird results. Try inputting the stock price to average down to in the form using the price in dollars and cents and see. Sometimes it works and sometimes it doesn't.
I would like to add thousands separators but have not found a formatting function so far. Will I have to write my own??
arelgee

[stolzyboy]

have you tried the number_format() function???

[arelgee]

Many thanx.
I saw this function when going through the manual, but I guess I couldn't see the forest because of all the trees in the way.
For newbies, the way to use number_format is this:

Round to 2 decimal places, add thou sep.
$Number = number_format($Number, 2);

Round to integer and add thou sep:
$Number = number_format($Number);

The manual gives a really convoluted example.
Also, make sure you do all your calculations before you use number_format, since it returns a string.
arelgee

[theeper]

If you use PHP version 4.3 or greater (I think that is the version), you can use the money_format() function for similar issues.