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Bug #42611 increment operator (++) on unset overloaded variable not produces 1
Submitted: 2007-09-10 13:36 UTC Modified: 2007-09-11 07:09 UTC
From: johnny at netvor dot sk Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 5.2.4 OS: all
Private report: No CVE-ID: None
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 [2007-09-10 13:36 UTC] johnny at netvor dot sk 
Description:
------------
calling unary increment operator (++) on unset overloaded member variable leaves variable unset instead of setting it to 1


Reproduce code:
---------------
<?php
class A {
	public $v;
}
class B {
	private $data;
	public function __set ($name, $value) {
		$data[$name] = $value;
	}
	public function __get ($name) {
		return $data[$name];
	}
}
$a = new A ();
$b = new B ();
$a->v++;
$b->v++;
echo "\$a->v is: {$a->v}<br/>";
echo "\$b->v is: {$b->v}<br/>";
?>

Expected result:
----------------
$a->v is: 1
$b->v is: 1

Actual result:
--------------
$a->v is: 1
$b->v is:

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 [2007-09-11 02:32 UTC] judas dot iscariote at gmail dot com 
Please, read your code, this is the expected behaviuor, there is a bug in your code.
accessing:

private $data;

as:

$data[$name]

will not work for sure ;) $this->data[$name] will ;)
 [2007-09-11 07:09 UTC] johnny at netvor dot sk 
PEBCAC
 
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