ID: 44021
Updated by: [EMAIL PROTECTED]
Reported By: rpanning at hotmail dot com
-Status: Open
+Status: Feedback
Bug Type: Class/Object related
Operating System: Windows XP SP2
PHP Version: 5.3CVS-2008-02-02 (snap)
New Comment:
<?php
namespace NS;
class ParentClass {}
class ChildClass extends ParentClass {}
if (is_subclass_of('NS::ChildClass', 'NS::ParentClass')) {
print 'Yes';
} else {
print 'No';
}
?>
Does the above code work for you? If yes, please close this bug as
bogus.
Automatic prefixing only occurs with absolute classnames, not compiled
variables. Imagine, for instance this code:
<?php
namespace Foo;
function testsit($cl)
{
return is_subclass_of($cl, 'ParentClass');
}
?>
Now, if one calls this code from this file:
<?php
namespace Blah;
var_dump(testsit('ChildClass'));
?>
should it look for Blah::ChildClass, Foo::ChildClass, or ::ChildClass?
There is no deterministic way to answer this question. Therefore fully
qualified classnames must be used for anything that isn't a T_STRING.
Previous Comments:
------------------------------------------------------------------------
[2008-02-02 02:01:37] rpanning at hotmail dot com
Description:
------------
The is_subclass_of() function does not accept classes in namespaces. A
warning is generated and the statement results as FALSE.
Also, in the example, if the namespace definition is removed it works.
Reproduce code:
---------------
namespace NS;
class ParentClass {}
class ChildClass extends ParentClass {}
if (is_subclass_of('ChildClass', 'ParentClass')) {
print 'Yes';
} else {
print 'No';
}
Expected result:
----------------
Yes
Actual result:
--------------
Warning: Unknown class passed as parameter in C:\test.php on line 7
No
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=44021&edit=1
