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Bug #44097 error with match
Submitted: 2008-02-11 10:29 UTC Modified: 2008-02-11 12:50 UTC
From: cristian at buttasi dot it Assigned:
Status: Not a bug Package: *Math Functions
PHP Version: 5.2.5 OS: Windows
Private report: No CVE-ID: None
 [2008-02-11 10:29 UTC] cristian at buttasi dot it
Description:
------------
i use php version 5.1.1

if i do : round(604.305,2) --->>> result 604.3
the corret value is 604.31
with same number round is correct but with this value is not correct

i hope that my note is important for us
excuse me for my bad english
bye, Cristian


Reproduce code:
---------------
echo round(604.305,2);

Expected result:
----------------
604.31

Actual result:
--------------
604.3

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 [2008-02-11 12:50 UTC] johannes@php.net
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:
http://docs.sun.com/source/806-3568/ncg_goldberg.html
 
Thank you for your interest in PHP.

.
 
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