[PHP-DEV] Bug #8676 Updated: Bad serialization of objects with references

[sbergmann]

ID: 8676
Updated by: sbergmann
Reported By: [EMAIL PROTECTED]
Old-Status: Open
Status: Feedback
Bug Type: *Session related
Operating system: 
PHP Version: 4.0.4
Assigned To: 
Comments:

Could you please give some feedback if this problem persists with a recent version 
(CVS, snapshot, 4.0.5 release) of PHP? Thanks!

Previous Comments:
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[2001-01-12 11:15:12] [EMAIL PROTECTED]
Some complex objects won't be correctly stored into the session. This is probably a 
problem with serialize/unserialize. It happens with objects structure containing some 
references. The code below builds the simpliest structure I could find that pinpouts 
the problem.
With more complex structure, you can have all sorts of strange behaviour, including 
crashing PHP, but the behaviours vary from one PHP installation to another (even with 
the same version and compile flags).

<?php
/*
View this script with a browser and press reload
It will probably display "-->137645276" instead of "-->Object" 
You can view it at http://www.generasound.com/test/bug.php
*/
session_start();
if (!isset($form))
{
  $form = new stdClass();
  $submit = new stdClass();

  $upperif = new stdClass();
  $upperif->Child = &$submit;
  $upperif->Layout = new stdClass();
  $upperif->Layout->Child = new stdClass();
  $upperif->Layout->Child->Interface = &$submit;

  $lowerif = new stdClass();

  $form->Children[0] = &$upperif;
  $form->Children[1] = &$lowerif;
  $form->Layout = new stdClass();
  $form->Layout->Children[1] = new stdClass();
  $form->Layout->Children[1]->Interface = &$lowerif;
  echo "-->".$form->Layout->Children[1]->Interface."<BR>";
  session_register("form");
}
else
{
  echo "-->".$form->Layout->Children[1]->Interface."<BR>";
}
?>


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