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Date: Wed, 03 Nov 2004 17:37:35 +0100
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Subject: Re: [PHP-DEV] serialize bug with array that references to itself?
From: jochem@iamjochem.com (Jochem Maas)

Andrey Hristov wrote:
>  Well, when there is traversion inside the engine, it checks whether it has
> processed a "node" already several times. As far as I remember the 
> threshold
> is 3. So once it goes over $Arr, the counter increases to 1, the second 
> time
> to 2 and third time it is 3 and ZE reports recursion.

is there good reason to set the threshold at 3 iso 2?

when dumping out objects that make heavy use of 'parent' references this 
leads to tons of extra output which would be greatly cutdown if the 
threshold was 2 iso 3.

just to make the point, print_r seems to use a threshold of 2 (which is 
why I always try print_r before taking my chances with var_dump):

<?php

class a { public $self; }

$A = new a;
$A->self = $A;
var_dump( $A );
print_r( $A );

?>

> 
> HTH,
> Andrey
> 
> Francisco M. Marzoa Alonso wrote:
> 
>> BTW., I'm not sure that there's nothing more wrong here. Takin the 
>> first part of the code of first example:
>>
>> <?php
>>
>> $Arr = array();
>> $Arr['self'] = &$Arr;
>> var_dump ( $Arr );
>>
>> ?>
>>
>> It returns:
>>
>> array(1) {
>> ["self"]=>
>> array(1) {
>>   ["self"]=>
>>   *RECURSION*
>> }
>> }
>>
>> Is that as its expected to be? I meant that perhaps it should be:
>>
>> array(1) {
>>   ["self"]=>
>>   *RECURSION*
>> }
>>
>> Since the element in $Arr['self'] is yet (or at least should be) a 
>> reference to itself...
>>
>