From:             
Operating system: Linux
PHP version:      5.3.2
Package:          Scripting Engine problem
Bug Type:         Bug
Bug description:[recursive reference In Array] Nesting level too deep

Description:
------------
When there is recursive reference in an array comparison yields Fatal
Error.

Both == and === operators yields the same.



//-------

If It is not a Bug then Recursion Detection is IMPOSSIBLE in PHP.

cause spl_object_hash() doesn't work on array or scaler types.

Test script:
---------------
<?php

error_reporting(255);

ini_set('display_errors','On');

header('Content-Type: text/plain');



$a = array();

$a[0] = &$a;

var_dump($a === $a[0]);

var_dump($a == $a[0]);



?>



Expected result:
----------------
boolean true or false

Actual result:
--------------
Fatal error: Nesting level too deep - recursive dependency? in
/Server/http/php-bugs/nesting.php on line 8

-- 
Edit bug report at http://bugs.php.net/bug.php?id=51533&edit=1
-- 
Try a snapshot (PHP 5.2):            
http://bugs.php.net/fix.php?id=51533&r=trysnapshot52
Try a snapshot (PHP 5.3):            
http://bugs.php.net/fix.php?id=51533&r=trysnapshot53
Try a snapshot (PHP 6.0):            
http://bugs.php.net/fix.php?id=51533&r=trysnapshot60
Fixed in SVN:                        
http://bugs.php.net/fix.php?id=51533&r=fixed
Fixed in SVN and need be documented: 
http://bugs.php.net/fix.php?id=51533&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=51533&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=51533&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=51533&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=51533&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=51533&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=51533&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=51533&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=51533&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=51533&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=51533&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=51533&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=51533&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=51533&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=51533&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=51533&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=51533&r=mysqlcfg

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