Bug #52950 [NEW]: Wrong implicit conversion of strings containing hexadecimal numbers to int
| From: | confik at gmail dot com | Date: | Wed, 29 Sep 2010 08:49:26 +0000 |
| Subject: | Bug #52950 [NEW]: Wrong implicit conversion of strings containing hexadecimal numbers to int | ||
| Groups: | php.bugs | ||
| Request: | Send a blank email to php-bugs+get-154729@lists.php.net to get a copy of this message | ||
From:
Operating system: Linux 2.6.32 Ubuntu 10.04/i686
PHP version: 5.3.3
Package: Strings related
Bug Type: Bug
Bug description:Wrong implicit conversion of strings containing hexadecimal numbers to int
Description:
------------
If string contains hexadecimal number, such as '0x05' it correctly
explicitly
casts to integer(resulting zero):
php > var_dump((int) '0x05');
int(0)
but incorrectly casts implicitly (resulting its value, 5)
php > var_dump(1 * '0x05');
int(5)
Same for floats:
php > var_dump((float) '0xffffffffff');
float(0)
php > var_dump(1 * '0xffffffffff');
float(1099511627775)
P.S.: Tests were made on x86 (i686) Linux machine.
Test script:
---------------
<?php
var_dump(1 * '0x05');
var_dump(1 * '0xffffffffff');
Expected result:
----------------
int(0)
float(0)
Actual result:
--------------
int(5)
float(1099511627775)
--
Edit bug report at http://bugs.php.net/bug.php?id=52950&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=52950&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=52950&r=trysnapshot53
Try a snapshot (trunk): http://bugs.php.net/fix.php?id=52950&r=trysnapshottrunk
Fixed in SVN: http://bugs.php.net/fix.php?id=52950&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52950&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=52950&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=52950&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=52950&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=52950&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=52950&r=support
Expected behavior: http://bugs.php.net/fix.php?id=52950&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=52950&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=52950&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=52950&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52950&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=52950&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=52950&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=52950&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=52950&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=52950&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=52950&r=mysqlcfg