From: roland dot dufour at multiprog dot net
Operating system: Windows Vista Ultimate French
PHP version: 5.2.6
PHP Bug Type: *General Issues
Bug description: A non stict condition with 0 return true
Description:
------------
When I try a non strict condition 0 == 'test', PHP return true.
Reproduce code:
---------------
// Non-strict condition
var_dump((0 == 'test'));
var_dump((1 == 'test'));
var_dump(('test' == 'test'));
// Strict condition
var_dump((0 === 'test'));
var_dump((1 === 'test'));
var_dump(('test' === 'test'));
Expected result:
----------------
bool(false) bool(false) bool(true)
I don't understand why a condition 0 == 'test' return true.
I discovered this "bug" by exploring the keys of a table via the
instruction "foreach". My code was then:
$options = array(
array(), // an array
array(), // an other array
'refProduct' => 'test' // a value
);
foreach ($options as $k => $option) {
if ('refProduct' == $k){
continue;
}
// Instructions...
}
Curiously, only my secondary table ("an other array") was executed by
"Instructions...".
Actual result:
--------------
bool(true) bool(false) bool(true)
--
Edit bug report at http://bugs.php.net/?id=46004&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=46004&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=46004&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=46004&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=46004&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=46004&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=46004&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=46004&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=46004&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=46004&r=support
Expected behavior: http://bugs.php.net/fix.php?id=46004&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=46004&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=46004&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=46004&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46004&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=46004&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=46004&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=46004&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=46004&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=46004&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=46004&r=mysqlcfg
