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Bug #29921 Float .25 as opposed to 0.25 calculates to 0
Submitted: 2004-08-31 18:33 UTC Modified: 2004-08-31 19:10 UTC
From: nat at noworrie dot com Assigned:
Status: Not a bug Package: Math related
PHP Version: 5.0.1 OS: FreeBSD 4.8
Private report: No CVE-ID: None
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From: nat at noworrie dot com
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 [2004-08-31 18:33 UTC] nat at noworrie dot com
Description:
------------
Using PHP 5.0.1 as a CGI script.

10 * '.25' should be 2.5 but it equates to 0.

10 * floatval('.25') does equal 2.5.

Does not occur in PHP 5.0.0RC2.

May be a related to Bug # 29547.

Reproduce code:
---------------
$a = '.25';
$b = '0.25';
echo "10 * .25 == ".(10*$a)."\n";
echo "10 * 0.25 == ".(10*$b)."\n";


Expected result:
----------------
10 * .25 == 2.5
10 * 0.25 == 2.5


Actual result:
--------------
10 * .25 == 0
10 * 0.25 == 2.5

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 [2004-08-31 19:10 UTC] derick@php.net
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

.
 
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