From: ppyupp at 126 dot com
Operating system: windows linux
PHP version: 4.4.7
PHP Bug Type: Unknown/Other Function
Bug description: float operation error,bad bug!!!!
Description:
------------
i think is very bad for operation!!
please run the code!
Reproduce code:
---------------
<?php
$t = 1000-882.41;
$t = $t;
$b = 117.59;
var_dump( $t ); // print 117.59
var_dump( $b ); // print 117.59
var_dump( $t*100 ); // print 11759
var_dump( ceil( $t*100 ) ); //print 11760 (error!!!! must be 11759)
if ( $t == $b )
echo '$t == $b';
else
echo '$t != $b';
?>
Expected result:
----------------
float(117.59)
float(117.59)
float(11759)
float(11759)
$t == $b
Actual result:
--------------
float(117.59)
float(117.59)
float(11759)
float(11760)
$t != $b
--
Edit bug report at http://bugs.php.net/?id=41632&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=41632&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=41632&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=41632&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=41632&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=41632&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=41632&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=41632&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=41632&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=41632&r=support
Expected behavior: http://bugs.php.net/fix.php?id=41632&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=41632&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=41632&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=41632&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=41632&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=41632&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=41632&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=41632&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=41632&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=41632&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=41632&r=mysqlcfg
