Edit report at https://bugs.php.net/bug.php?id=64645&edit=1
ID: 64645
User updated by: pretzlaw at gmail dot com
Reported by: pretzlaw at gmail dot com
Summary: Static methods with static variables keep their
value
Status: Not a bug
Type: Bug
Package: *General Issues
Operating System: Ubuntu 12.10 L 3.5.0-27-generic
PHP Version: 5.4.14
Block user comment: N
Private report: N
New Comment:
douh!
Previous Comments:
------------------------------------------------------------------------
[2013-04-15 03:01:37] [email protected]
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php
I don't think there is a bug here.
static::self only choose the first leave static method..
try to understant the diff by changing the getInstance to:
public static function getInstance()
{
static $getInstance;
if (null == $getInstance) $getInstance = static::makeInstance();
return $getInstance;
}
------------------------------------------------------------------------
[2013-04-13 20:46:45] pretzlaw at gmail dot com
Description:
------------
Inherit a class with a static method. The static method has static variable in
it. Now execute both methods and watch the variable. It wont change from one
class to another.
Test script:
---------------
<?php
class A
{
function __construct()
{
echo get_class($this->getInstance()), PHP_EOL,
get_class(static::getInstance()), PHP_EOL,
get_class(self::getInstance()), PHP_EOL;
}
public static function getInstance()
{
static $getInstance;
if (null == $getInstance) $getInstance = self::makeInstance();
return $getInstance;
}
public static function makeInstance()
{
return new stdClass();
}
}
$a = new A();
class B extends A
{
function __construct()
{
echo get_class($this->getInstance()), PHP_EOL,
get_class(static::getInstance()), PHP_EOL,
get_class(self::getInstance()), PHP_EOL;
}
public static function makeInstance()
{
return new ArrayObject();
}
}
$a = new B();
Expected result:
----------------
stdClass
stdClass
stdClass
ArrayObject
ArrayObject
stdClass
Actual result:
--------------
stdClass
stdClass
stdClass
stdClass
stdClass
stdClass
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=64645&edit=1
