note 34837 added to keyword.parent
| From: | sibaz at rack1 dot php dot net | Date: | Fri, 08 Aug 2003 04:20:36 +0000 |
| Subject: | note 34837 added to keyword.parent | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-53607@lists.php.net to get a copy of this message | ||
if C# is like C++, then you've misunderstood the use of public/private variables.
Everything in PHP is public, so a variable defined and used in a parent class is changed and reused
by a child class.
Private variables in a parent class are only avaliable to functions in that parent class. Any
'redeclaration' of variables with the same name in child classes is completely bogus.
In PHP a::a and b::a are the same variable and so when a::display uses it, it gets the latest value
(ie 9).
in C++ (I'm assuming its the same as C# in this case), because a::a is private, b::a is a new
separate variable. a::display doesn't know b::a exists, so rightly ignores it.
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Manual Page -- http://www.php.net/manual/en/keyword.parent.php
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