From: techlivezheng at gmail dot com
Operating system: Linux
PHP version: 5.4.3
Package: Scripting Engine problem
Bug Type: Feature/Change Request
Bug description:Abstract static property?
Description:
------------
As we have "late static bindings" now, would it be reasonable to have a
"abstract static property"?
See the bellow example.
abstract class A {
//If this could be declared as abstract to make
//the subclass have to redeclare it in order to
//have it own $mTest to use.
//If $mTest is not declared in one subclass, it would
//change the $mTest of A which is shared by many
//subclasses, some unexpected things would happen.
//The design is to make each subclass have its own
//$mTest to use and it has to be existed.
//$mTest in A is just for a skeleton purpose, even should
//not be assigned a value.
static $mTest;
static function setTest($value) {
static::$mTest = $value;
}
static function DumpTest () {
echo 'static:' . static::$mTest . "\n";
echo 'A-self:' . self::$mTest . "\n";
}
}
class B extends A {
static function DumpTest () {
parent::DumpTest();
echo 'B-self:' . self::$mTest . "\n";
echo 'B-parent:' . parent::$mTest . "\n";
}
}
class C extends A {
static $mTest;
static function DumpTest () {
parent::DumpTest();
echo 'C-self:' . self::$mTest . "\n";
echo 'C-parent:' . parent::$mTest . "\n";
}
}
class D extends C {
static $mTest;
static function DumpTest () {
parent::DumpTest();
echo 'D-self:' . self::$mTest . "\n";
echo 'D-parent:' . parent::$mTest . "\n";
}
}
B::setTest('test1');//This will change the $mStorages of class A
B::DumpTest();
//static:test1
//A-self:test1
//B-self:test1
//B-parent:test1
C::setTest('test2');
C::DumpTest();
//static:test2
//A-self:test1
//C-self:test2
//C-parent:test1
D::setTest('test3');
D::DumpTest();
static:test3
//A-self:test1
//C-self:test2
//C-parent:test1
//D-self:test3
//D-parent:test2
--
Edit bug report at https://bugs.php.net/bug.php?id=62320&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=62320&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=62320&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=62320&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=62320&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=62320&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=62320&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=62320&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=62320&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=62320&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=62320&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=62320&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=62320&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=62320&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=62320&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=62320&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=62320&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=62320&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=62320&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=62320&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=62320&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=62320&r=mysqlcfg
