From: nukboon at gmail dot com
Operating system: Centos 6
PHP version: 5.5.3
Package: Unknown/Other Function
Bug Type: Bug
Bug description:Compare 0 variable alway return true
Description:
------------
See below my testing script. I've test with all version of php it's return
same
result.
Test script:
---------------
$a = 0;
if($a == 'id'){
echo 'Yes' . PHP_EOL;
}
var_dump($a);
var_dump($a == 'id');
var_dump($a == 'ids');
var_dump($a == 'def');
$a = 1;
if($a == 'id'){
echo 'Yes' . PHP_EOL;
}
var_dump($a);
var_dump($a == 'id');
var_dump($a == 'ids');
var_dump($a == 'def');
// Result
Yes
int(0)
bool(true)
bool(true)
bool(true)
int(1)
bool(false)
bool(false)
bool(false)
Expected result:
----------------
$a = 0;
var_dump($a == 'abc');
//should be: bool(false)
--
Edit bug report at https://bugs.php.net/bug.php?id=65551&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=65551&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=65551&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=65551&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=65551&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=65551&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=65551&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=65551&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=65551&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=65551&r=support
Expected behavior: https://bugs.php.net/fix.php?id=65551&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=65551&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=65551&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=65551&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65551&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=65551&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=65551&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=65551&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=65551&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=65551&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=65551&r=mysqlcfg
