#49418 [NEW]: The greatest bug in the history of PHP
| From: | ilies dot radu at gmail dot com | Date: | Sun, 30 Aug 2009 17:29:54 +0000 |
| Subject: | #49418 [NEW]: The greatest bug in the history of PHP | ||
| Groups: | php.bugs | ||
| Request: | Send a blank email to php-bugs+get-141719@lists.php.net to get a copy of this message | ||
From: ilies dot radu at gmail dot com
Operating system: MacOSX, NetBSD, Linux
PHP version: 5.2.10
PHP Bug Type: Variables related
Bug description: The greatest bug in the history of PHP
Description:
------------
---- Example #1 / FAIL (This should NOT FAIL, but it does) !!!!!!!!!!!
$a=1.3333;
$b=1.6666;
$c=2.9999;
$d=($a+$b);
if($d != $c) {
echo 'php have a serious bug ...';
} else {
echo 'OK ...';
} //end if else
// notice that currently I use number_format($d, 4, '.', '') to fix this,
but is abnormal !
----
---- Example #2 / OK
$a=4.3333;
$b=4.6666;
$c=8.9999;
$d=($a+$b);
if($d != $c) {
echo 'php have a serious bug ...';
} else {
echo 'OK ...';
} //end if
// this seems that not raise that bug, ... hmmm ... very strange
----
I tested it on:
PHP 4.4.9
PHP 5.2.9
PHP 5.2.10
PHP 4.4.4 (bundled with Zend Studio)
It appears that all fail at Example #1 and should not ... !!!
If you release a patch, please also patch the 4.4.9 version.
Reproduce code:
---------------
$a=1.3333;
$b=1.6666;
$c=2.9999;
$d=($a+$b);
if($d != $c) {
echo 'php have a serious bug ...';
} else {
echo 'OK ...';
} //end if else
Expected result:
----------------
the output should be 'OK ...'
but is not !
Actual result:
--------------
'php have a serious bug ...'
--
Edit bug report at http://bugs.php.net/?id=49418&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49418&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49418&r=trysnapshot53
Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49418&r=trysnapshot60
Fixed in SVN: http://bugs.php.net/fix.php?id=49418&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49418&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=49418&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=49418&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=49418&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=49418&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=49418&r=support
Expected behavior: http://bugs.php.net/fix.php?id=49418&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=49418&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=49418&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=49418&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49418&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=49418&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=49418&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=49418&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=49418&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=49418&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=49418&r=mysqlcfg