From: jan dot vernieuwe at webline dot be
Operating system: FreeBSD
PHP version: 5.2.6
PHP Bug Type: Math related
Bug description: Weird rounding behaviour
Description:
------------
Rounding a calculated float gives bad results, rounding it as a string
works as intended.
Reproduce code:
---------------
<?php
echo "<pre>";
$total = 332.145;
$substract = 274.5;
$myVal = $total-$substract;
var_dump($myVal);
var_dump(round(57.645,2));
var_dump(round($myVal,2));
var_dump(round("$myVal",2));
echo "</pre>";
?>
Expected result:
----------------
float(57.645)
float(57.65)
float(57.65)
float(57.65)
Actual result:
--------------
float(57.645)
float(57.65)
float(57.64)
float(57.65)
--
Edit bug report at http://bugs.php.net/?id=45970&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=45970&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=45970&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=45970&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=45970&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=45970&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=45970&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=45970&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=45970&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=45970&r=support
Expected behavior: http://bugs.php.net/fix.php?id=45970&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=45970&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=45970&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=45970&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=45970&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=45970&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=45970&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=45970&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=45970&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=45970&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=45970&r=mysqlcfg
