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Date: Wed, 06 Jun 2007 01:19:19 +0400
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To: "mark@cyanox.nl" <mark@cyanox.nl>
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Subject: Re: [PHP-DEV] Recursive classes ... possible bug?
From: antony@zend.com (Antony Dovgal)

On 06.06.2007 01:10, mark@cyanox.nl wrote:
> <?php
> class class1{
>   public $c2;
>   function __construct($c2){
>     $this->c2 = $c2;
>   }
> }
> 
> class class2{
>   public $c1;
>   function setC1($c1){
>     $this->c1 = $c1;
>   }
>   function test(){
>     echo $this == $this->c1->c2?'equals':'not equals'; // Somehow this 
> if statement triggers the error.
>   }
> }
> 
> 
> $tt = new class2();
> $t = new class1($tt);
> $tt->setC1($t);
> var_dump($t);
> $tt->test();
> ?>
> 
> I get the error:
> 
> Fatal error: Nesting level too deep - recursive dependency? in 
> /home/cyanox/DEV/test_object_recursion.php on line 15

$t->$tt->$t->$tt->$t->$tt->$t->$tt->$t->$tt->$t and so on.
So you get endless recursion when comparing the objects.
 
> Although it is obvious that there is a recursion I think this simple 
> example should work without error.

Sure, if you have any proposals/ideas - feel free to share them.

-- 
Wbr, 
Antony Dovgal