From: dimo dot vanchev at bianor dot com
Operating system: RedHat 9.0
PHP version: 5.0.0
PHP Bug Type: Zend Engine 2 problem
Bug description: PHP 5 allows class constants to be overriden
Description:
------------
If we declare a class constant twice or more PHP allows this without any
notifications. This should be fixed, because it may bring to confusion. A
constant should be constant, thus not allowing to be overriden neither in
the same class, nor in child classes.
Currently non-class constants allow to be overriden too, at least they
output a notice saying "Constant already defined". Maybe this should be
brought up to warning.
Just my thoughts!
Reproduce code:
---------------
<?php
class A {
const MY_CONSTANT = "A. value_1";
const MY_CONSTANT = "A. value_2";
public function __construct() {
echo self::MY_CONSTANT, "\n";
}
}
class B extends A {
const MY_CONSTANT = "B. value_1";
const MY_CONSTANT = "B. value_2";
public function __construct() {
echo self::MY_CONSTANT, "\n";
}
}
new A();
new B();
?>
Expected result:
----------------
should display warning, error or something like that.
Actual result:
--------------
A. value_2
B. value_2
--
Edit bug report at http://bugs.php.net/?id=29446&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=29446&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=29446&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=29446&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=29446&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=29446&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=29446&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=29446&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=29446&r=support
Expected behavior: http://bugs.php.net/fix.php?id=29446&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=29446&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=29446&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=29446&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=29446&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=29446&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=29446&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=29446&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=29446&r=float
