From: timlind at iafrica dot com
Operating system:
PHP version: 5.3.0beta1
PHP Bug Type: Feature/Change Request
Bug description: Ability for a superclass to declare that a class variable is
per each subclass.
Description:
------------
The new static:: keyword (poorly named, wouldn't virtual:: be better?) has
introduced the ability for a super-class to execute in the context of the
class that specializes it.
This has allowed the super-class to access attributes that are
(re)declared in the subclass, allowing specialized functions to be called.
For this to happen, the sub-class needs to have statically declared and
defined the method (if there was such a method in the super-class in the
first place). For methods, this is fine, because for a method to be
overriden by a subclass, it will of course need to be defined by the
subclass.
But for attributes, the subclass has no concern with or reason to
redeclare the attribute, so it should be possible for the super class to
specify that a static attribute be redeclared for the subclass.
Reproduce code:
---------------
class Super {
static self::$variable = 'super';
function __construct() {
static::$variable = 'sub';
}
}
class Sub extends Super {
}
new Sub();
Super::$variable; # => super
Sub::$variable; # => sub
Expected result:
----------------
Super::variable should be untouched, and Sub::variable should be affected
by the statement in Super::__construct.
self::$var makes sense in comparison to the opposite which is Super::$var
(what static $var is currently a shorthand for).
Actual result:
--------------
Invalid syntax.
--
Edit bug report at http://bugs.php.net/?id=47380&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=47380&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=47380&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=47380&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=47380&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=47380&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=47380&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=47380&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=47380&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=47380&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=47380&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=47380&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=47380&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=47380&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=47380&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=47380&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=47380&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=47380&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=47380&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=47380&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=47380&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=47380&r=mysqlcfg
