From:             mike at silverorange dot com
Operating system: CentOS or RHEL
PHP version:      5.3.26
Package:          Date/time related
Bug Type:         Bug
Bug description:DateTime subclasses cant use custom serializer

Description:
------------
If a DateTime subclass implements Serializable it cant be unserialized. A
PHP 
warning is raised when restoring the time zone is attempted.

Test script:
---------------
class MyDate extends DateTime implements Serializable
{
    public function serialize()
    {
        $data = array(
            $this->getTimestamp(),
            $this->dateTimezone()->getName()
        );

        return serialize($data);
    }

    public function unserialize($data)
    {
        $data = unserialize($data);
        $this->setTimestamp($data[0]);
        $this->setTimezone(new DateTimeZone($data[1]));
    }
}

$d = new MyDate('2013-01-01', new DateTimeZone('UTC'));
echo unserialize(serialize($d))->format('c');

Expected result:
----------------
2013-01-01T00:00:00+00:00

Actual result:
--------------
Warning: DateTime::setTimezone(): The DateTime object has not been
correctly 
initialized by its constructor

-- 
Edit bug report at https://bugs.php.net/bug.php?id=65151&edit=1
-- 
Try a snapshot (PHP 5.4):   
https://bugs.php.net/fix.php?id=65151&r=trysnapshot54
Try a snapshot (PHP 5.3):   
https://bugs.php.net/fix.php?id=65151&r=trysnapshot53
Try a snapshot (trunk):     
https://bugs.php.net/fix.php?id=65151&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=65151&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=65151&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=65151&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=65151&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=65151&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=65151&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=65151&r=notwrong
Not enough info:            
https://bugs.php.net/fix.php?id=65151&r=notenoughinfo
Submitted twice:            
https://bugs.php.net/fix.php?id=65151&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=65151&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65151&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=65151&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=65151&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=65151&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=65151&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=65151&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=65151&r=mysqlcfg

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