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Bug #43906 wrong calculation from function number_format
Submitted: 2008-01-22 11:21 UTC Modified: 2008-01-22 12:56 UTC
From: b dot paulsen at cms-mail dot de Assigned:
Status: Not a bug Package: *Math Functions
PHP Version: 4.4.8 OS: Linux
Private report: No CVE-ID: None
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From: b dot paulsen at cms-mail dot de
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 [2008-01-22 11:21 UTC] b dot paulsen at cms-mail dot de

if you do follow code you get a wrong float back:

echo number_format(19.80,20,",",".");



Reproduce code:
echo number_format(19.80,20,",",".");

Expected result:


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 [2008-01-22 12:56 UTC]
Floating point values have a limited precision. Hence a value might 
not have the same string representation after any processing. That also
includes writing a floating point value in your script and directly 
printing it without any mathematical operations.

If you would like to know more about "floats" and what IEEE
754 is read this:
Thank you for your interest in PHP.

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