From: ken at gizzar dot com
Operating system: Mac OS X
PHP version: 5.3CVS-2008-03-17 (snap)
PHP Bug Type: Scripting Engine problem
Bug description: Late static binding not available for static properties
Description:
------------
Late static binding not available for static properties. A very critical
use case for PHP 5.3's late static binding is the ActiveRecord pattern.
An example implementation would have the ActiveRecord abstract class to
dynamically create objects of found records. The metadata about each
table should be kept with each ActiveRecord class's static scope. This
is simply not doable even with the new late static binding functionality
of PHP 5.3.
Basically the same question as #44315, but it's really a design flaw in
the PHP 5.3 scripting engine to not include a way for the parent class
to dynamically create static properties. If the resolution is "no fix,"
then I'll be forced to create a metadata static variable which is
(namespaced and) shared by all the classes extending the AR class.
Reproduce code:
---------------
<?php
class P
{
public static $v = "parent";
public static function foo()
{
static::$v = "child";
echo static::$v . "\n";
}
}
class C extends P
{
}
echo P::$v . "\n";
C::foo();
echo P::$v . "\n";
// RESULTS
parent
child
child
Expected result:
----------------
// RESULTS: foo() creates a static property for the child class and sets
it according to the static:: scope
parent
child
parent
Actual result:
--------------
// RESULTS: static:: only respects the static property in the parent P
class
parent
child
child
--
Edit bug report at http://bugs.php.net/?id=44457&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=44457&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=44457&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=44457&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=44457&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=44457&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=44457&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=44457&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=44457&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=44457&r=support
Expected behavior: http://bugs.php.net/fix.php?id=44457&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=44457&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=44457&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=44457&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=44457&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=44457&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=44457&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=44457&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=44457&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=44457&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=44457&r=mysqlcfg
