#38555 [NEW]: PHP treats undefined constants differently to variables
From: php at seven dot net dot nz
Operating system: Irrelevant
PHP version: 5.1.5
PHP Bug Type: Feature/Change Request
Bug description: PHP treats undefined constants differently to variables
Description:
------------
PHP evaluates an undefined constant as true, whereas it evaluates an
undefined variable as false.
Reproduce code:
---------------
<?= TEST ? '1' : '0' ?><br />
<?= $test ? '1' : '0' ?><br />
Expected result:
----------------
Notice: Use of undefined constant TEST - assumed 'TEST' in test.php on
line 1
0
Notice: Undefined variable: test in test.php on line 2
0
Actual result:
--------------
Notice: Use of undefined constant TEST - assumed 'TEST' in test.php on
line 1
1
Notice: Undefined variable: test in test.php on line 2
0
--
Edit bug report at http://bugs.php.net/?id=38555&edit=1
--
Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=38555&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=38555&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=38555&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=38555&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=38555&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=38555&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=38555&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=38555&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=38555&r=support
Expected behavior: http://bugs.php.net/fix.php?id=38555&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=38555&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=38555&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=38555&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38555&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=38555&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=38555&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=38555&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=38555&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=38555&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=38555&r=mysqlcfg
Thread (3 messages)
- php at seven dot net dot nz