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Request #48016 stdClass::__setState is not defined although var_export() uses it
Submitted: 2009-04-19 12:51 UTC Modified: 2018-07-12 11:35 UTC
Votes:9
Avg. Score:4.0 ± 0.9
Reproduced:8 of 8 (100.0%)
Same Version:4 (50.0%)
Same OS:4 (50.0%)
From: c dot r1 at gmx dot de Assigned: ajf (profile)
Status: Closed Package: Class/Object related
PHP Version: 5.3 OS: Linux
Private report: No CVE-ID: None
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 [2009-04-19 12:51 UTC] c dot r1 at gmx dot de 
Description:
------------
var_export() for an object which is just used for storing properties and is of stdClass produces invalid code as stdClass::__setState is not implemented, for no appearant reason. It would be nice to have an implementation of this in 5.3.0, and, if possible, a workaround for earlier versions of php.

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 [2011-04-08 20:31 UTC] jani@php.net
-Package: Feature/Change Request +Package: Class/Object related -PHP Version: 5.2.9 +PHP Version: 5.3
 [2013-08-06 06:20 UTC] yohgaki@php.net
-Status: Open +Status: Closed -Assigned To: +Assigned To: yohgaki
 [2013-08-06 06:20 UTC] yohgaki@php.net 
It seems issue is fixed.

[yohgaki@dev PHP-5.4]$ ./php-bin -a
Interactive shell

php > $o = new stdClass;
php > var_export($o);
stdClass::__set_state(array(
))php > $o->foo = 123;
php > $o->bar = 456;
php > var_export($o);
stdClass::__set_state(array(
   'foo' => 123,
   'bar' => 456,
))php >
 [2015-09-09 13:42 UTC] cmb@php.net
-Status: Closed +Status: Re-Opened
 [2015-09-09 13:42 UTC] cmb@php.net 
@yohgaki: The issue is not that var_export() fails, but rather
that the exported representation can't be eval'd (i.e. imported
again), see <https://3v4l.org/XSPRH>. So either StdClass should
implement __set_state() or var_export() should export something
like the following for StdClass instances:

  (object) array(...)
 [2015-09-09 13:44 UTC] cmb@php.net 
Related To: Bug #67918
 [2017-03-14 17:30 UTC] ajf@php.net 
This pull request would fix this, if merged: https://github.com/php/php-src/pull/2420

Albeit not by adding __set_state, but by using an (object) cast instead.
 [2017-10-24 03:07 UTC] kalle@php.net
-Status: Re-Opened +Status: Assigned
 [2018-07-05 19:59 UTC] ajf@php.net
-Assigned To: yohgaki +Assigned To: ajf
 [2018-07-12 11:35 UTC] cmb@php.net
-Status: Assigned +Status: Closed
 [2018-07-12 11:35 UTC] cmb@php.net 
This has been fixed: <http://git.php.net/?p=php-src.git;a=commit;h=e4e9cd835550990a6b8df7c61d59b6cc0da9b5b2>.
 [2019-08-06 23:53 UTC] roy-orbison at devo dot net dot au 
Because the fix does not make data exported the old way parsable (I assume for consistent behaviour), you can repair it by replacing "stdClass::__set_state" with "(object)", sans quotes.
 
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