From: az at kreatiefer dot de
Operating system: Ubuntu 9.04
PHP version: 5.3.0
PHP Bug Type: *General Issues
Bug description: logicerror in boolean cast from string
Description:
------------
When you cast a string variable to boolean type there are some cases in
which the cast doesn't work properly, i think.
Reproduce code:
---------------
$arrTestVars = array(
'0',
'-0',
'+0',
'0.0',
'0e0',
'0.0e0'
);
foreach($arrTestVars as $strTestVar) {
var_dump(
(bool)$strTestVar
);
}
Expected result:
----------------
// Expected Result => (bool)false, (bool)false, (bool)false, (bool)false,
(bool)false, (bool)false
All the tests above should be evaluated to false, because
(bool)0.0 === false
(bool)0e0 === false
and so on.
Now one has to use the workaround (bool)(int)'0.0' === false ...
Actual result:
--------------
// Actual Result => (bool)false, (bool)true, (bool)true, (bool)true,
(bool)true, (bool)true
--
Edit bug report at http://bugs.php.net/?id=49426&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=49426&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=49426&r=trysnapshot53
Try a snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=49426&r=trysnapshot60
Fixed in SVN:
http://bugs.php.net/fix.php?id=49426&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=49426&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=49426&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=49426&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=49426&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=49426&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=49426&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=49426&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=49426&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=49426&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=49426&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49426&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=49426&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=49426&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=49426&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=49426&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=49426&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=49426&r=mysqlcfg
