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Incorrect rounding with number_format

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Subject:Incorrect rounding with number_format
Summary:Incorrect rounding with number_format
Messages:2
Author:Richard Fennah
Date:2010-10-19 11:47:25
Update:2010-10-26 03:14:31
 

  1. Incorrect rounding with number_format   Reply   Report abuse  
Picture of Richard Fennah Richard Fennah - 2010-10-21 19:39:13
I am currently running the following:

$vatcost = ($amount/100)*$vat;
$totalvat = $totalvat + $vatcost;
$totalvat = number_format($totalvat, 2, '.', '');

At the start of this code $vatcost is 47.915.

Using basic maths this should round to 47.92, however every time this code is run I am getting 47.93!

Does anything seem odd with my code or is this a bug within number_format?

Thanks.

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