From:
Operating system: Windows XP
PHP version: 5.3.2
Package: Reflection related
Bug Type: Feature/Change Request
Bug description:instanceof for static calls
Description:
------------
Hy guys,
Here's a problem i faced today : i wanted to know if a base and derived
class having only static functions and using both late static binding were
an implementation of a specific interface.
The problem was that the class base needed to know if its child implemented
a specific interface.
Not easy to explain, the code is easier for a better comprehension :
Test script:
---------------
<?php
interface iTest { }
class base {
public static function create() {
if (self instanceof iTest) echo 'iTest';
}
}
class child extends base implements iTest { }
child::create();
?>
Expected result:
----------------
Normally the result should be 'iTest' because the class 'child' implements
iTest
Actual result:
--------------
Doesn't execute.
Here's the solution i found : i used the ReflectionCLass to emulate that
feature
<?php
interface iTest { }
class base {
public static function create() {
$r = new ReflectionClass(static::$SELF);
if (in_array('iTest', $r->getInterfaceNames())) echo 'iTest';
}
}
class child extends base implements iTest {
protected static $SELF = __CLASS__;
}
child::create();
?>
--
Edit bug report at http://bugs.php.net/bug.php?id=51544&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=51544&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=51544&r=trysnapshot53
Try a snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=51544&r=trysnapshot60
Fixed in SVN:
http://bugs.php.net/fix.php?id=51544&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=51544&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=51544&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=51544&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=51544&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=51544&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=51544&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=51544&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=51544&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=51544&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=51544&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=51544&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=51544&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=51544&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=51544&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=51544&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=51544&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=51544&r=mysqlcfg
