From: sokkis at gmail dot com
Operating system: Gentoo linux
PHP version: 5.4.12
Package: Variables related
Bug Type: Bug
Bug description:Floating point error
Description:
------------
Floating point rounded when print, but won't on subtraction.
Test script:
---------------
<?php
$n1 = 905000;
$n2 = 0.27;
$ertek =$n1*$n2;
$egesz = round( $ertek );
$eredmeny = $ertek-$egesz;
echo "$ertek - $egesz = $eredmeny\n";
$n1 = 905000;
$n2 = 0.27;
$ertek =$n1*$n2;
$egesz = (int) $ertek;
$eredmeny = $ertek-$egesz;
echo "$ertek - $egesz = $eredmeny";
Expected result:
----------------
244350 - 244350 = 0
244350 - 244350 = 0
Actual result:
--------------
244350 - 244350 = 2.9103830456734E-11
244350 - 244350 = 2.9103830456734E-11
--
Edit bug report at https://bugs.php.net/bug.php?id=64307&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=64307&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=64307&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=64307&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=64307&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=64307&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=64307&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=64307&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=64307&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=64307&r=support
Expected behavior: https://bugs.php.net/fix.php?id=64307&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=64307&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=64307&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=64307&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64307&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=64307&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=64307&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=64307&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=64307&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=64307&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=64307&r=mysqlcfg
