From: sebastian dot sieburg at partyleader dot de
Operating system: Linux, BSD, etc. ..
PHP version: Irrelevant
PHP Bug Type: Variables related
Bug description: comparing 2 float variables with same value result false
Description:
------------
set a var using round, the other via value ... compare the vars .. same
values but comparision returns false .. tried in php 4.3.1, 5.0.0-dev and
4.1.2 .. same problem in all versions ..
Reproduce code:
---------------
<?php
$val = 1.11;
echo "\$val: "; var_dump ($val);
$p1 = $val * 100;
$p2 = round ($val * 100);
$p1 = (float)$p1;
$p2 = (float)$p2;
if ($p1 == $p2)
echo "$p1 == $p2";
else
echo "$p1 != $p2";
echo "\n";
echo "\$p1: "; var_dump ($p1);
echo "\$p2: "; var_dump ($p2);
?>
Expected result:
----------------
$val: float(1.11)
111 == 111
$p1: float(111)
$p2: float(111)
Actual result:
--------------
$val: float(1.11)
111 != 111
$p1: float(111)
$p2: float(111)
--
Edit bug report at http://bugs.php.net/?id=25936&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=25936&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=25936&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=25936&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=25936&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=25936&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=25936&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=25936&r=support
Expected behavior: http://bugs.php.net/fix.php?id=25936&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=25936&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=25936&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=25936&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=25936&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=25936&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=25936&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=25936&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=25936&r=float
