From: crescent at corruptinteractive dot com
Operating system: FreedBSD
PHP version: 4.3.3
PHP Bug Type: Arrays related
Bug description: serialize() doesn't work properly with floating point
Description:
------------
This bug only appeared after upgrading from php 4.3.1 to php 4.3.3
When serializing an array of floating point values with a specific decimal
value of significance (ie: thousandths), once the array is serialized,
bogus values are stored after the hundredth decimal position.
Here is a short, simple example:
Reproduce code:
---------------
$array[0] = 0;
$array[1] = 1.111;
$array[2] = 2.222;
$array[3] = 3.333;
$array[4] = 4.444;
$array[5] = 5.555;
$array = serialize($array);
echo "Array = $array";
Expected result:
----------------
Array =
a:6:{i:0;i:0;i:1;d:1.111;i:2;d:2.222;i:3;d:3.333;i:4;d:4.444;i:5;d:5.555;}
Actual result:
--------------
Array =
a:6:{i:0;i:0;i:1;d:1.1109999999999999875655021241982467472553253173828125;i:2;d:2.221999999999999975131004248396493494510650634765625;i:3;d:3.3330000000000001847411112976260483264923095703125;i:4;d:4.44399999999999995026200849679298698902130126953125;i:5;d:5.55499999999999971578290569595992565155029296875;}
Notice the bogus values after the hundredth decimal place for each array
element.
--
Edit bug report at http://bugs.php.net/?id=25425&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=25425&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=25425&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=25425&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=25425&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=25425&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=25425&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=25425&r=support
Expected behavior: http://bugs.php.net/fix.php?id=25425&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=25425&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=25425&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=25425&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=25425&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=25425&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=25425&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=25425&r=gnused
