ID: 26350
User updated by: forseti at oak dot rpg dot pl
-Summary: Inherited methods can't access private methods
Reported By: forseti at oak dot rpg dot pl
Status: Open
Bug Type: Zend Engine 2 problem
Operating System: *
PHP Version: 5.0.0b2 (beta2)
New Comment:
Summary correction (can't access private fields of course)
Previous Comments:
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[2003-11-21 09:29:13] forseti at oak dot rpg dot pl
Description:
------------
When a method is inherited from a base class it seems that it retains
its context. When it's called from derived class object, it turns out
that method cannot access private fields of it's own (derived class)
object.
What's strange, the inherited method can access protected fields
easily. As if 'protected' opened access not only for derived classes
but for base classes too.
This is a key issue if one wants to code the accessor only once, in
base class so that any derived class could use it and provide read-only
access to any field.
Reproduce code:
---------------
<?php
class ParentClass {
protected $a = 'ParentClass<br>';
public function get($arg) {
return $this->$arg;
}
}
class ChildClass extends ParentClass{
protected $b = 'ChildClass - Protected<br>';
private $c = 'ChildClass - Private<br>';
}
$test = new ChildClass;
echo $test->get('a');
echo $test->get('c'); //fatal error
echo $test->get('b'); //strange - it's ok
?>
Expected result:
----------------
ParentClass
ChildClass - Protected
ChildClass - Private
Anyway, 'protected' field should be accessible only in derived classes
and where declared.
Actual result:
--------------
ParentClass
ChildClass - Protected
Fatal error: Cannot access private property childclass::$c
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Edit this bug report at http://bugs.php.net/?id=26350&edit=1
