note 31265 deleted from keyword.parent by didou

[didou@php.net]

Note Submitter: emmix -> [email]emmix@wa.home.pl[/email]

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Problem comprehension the class extends and inheritance variables:

class A {
var $x;
function val() { return $this->x; }
}

class B extends A {
function B() { echo(parent::val()); }
}

...............

$a1=new A; $a1->x=1; // $x in $a1 have value 1
$a2=new A; $a2->x=2; // $x in $a2 have value 2
$b=new B; // result: !isset or 0.

...............
new B use procedure "val" from class A. Both object $a1 and $a2 have some physical procedures. But variables have different physical! Thus function "val" consumption variable $x from $a1, if from $a2 ?. HOW COME function val() MUST HAVE knowledgle where from use variable $x ?.