Bug #53437 [Ver->Asn]: Crash when using unserialized DatePeriod instance

From: Date: Wed, 01 Dec 2010 16:41:12 +0000
Subject: Bug #53437 [Ver->Asn]: Crash when using unserialized DatePeriod instance
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-156656@lists.php.net to get a copy of this message
Edit report at http://bugs.php.net/bug.php?id=53437&edit=1

 ID:                 53437
 Updated by:         cataphract@php.net
 Reported by:        from dot php dot net at brainbox dot cz
 Summary:            Crash when using unserialized DatePeriod instance
-Status:             Verified
+Status:             Assigned
 Type:               Bug
 Package:            Date/time related
 Operating System:   Windows XP SP3
 PHP Version:        5.3.3
-Assigned To:        
+Assigned To:        cataphract
 Block user comment: N
 Private report:     N



Previous Comments:
------------------------------------------------------------------------
[2010-12-01 17:15:05] from dot php dot net at brainbox dot cz

Description:
------------
DatePeriod class does not have the serialization/unserialization logic
implemented. Therefore, when unserialized instance is used, script
crashes.

This is result of serializing the DatePeriod instance:
O:10:"DatePeriod":0:{}

unserialize() wents fine as well, but when I call foreach() on
unserialized instance, the script crashes.

Test script:
---------------
$dp = new DatePeriod(new DateTime('2010-01-01 UTC'), new
DateInterval('P1D'), 2);

echo "Original:\r\n";
foreach($dp as $dt) {
	echo $dt->format('Y-m-d H:i:s')."\r\n";
}
echo "\r\n";

$ser = serialize($dp); // $ser is: O:10:"DatePeriod":0:{}

// Create dangerous instance
$dpu = unserialize($ser); // $dpu has invalid values…

echo "Unserialized:\r\n";
// …which leads to CRASH:
foreach($dpu as $dt) {
	echo $dt->format('Y-m-d H:i:s')."\r\n";
}

Expected result:
----------------
Original:
2010-01-01 00:00:00
2010-01-02 00:00:00
2010-01-03 00:00:00

Unserialized:
2010-01-01 00:00:00
2010-01-02 00:00:00
2010-01-03 00:00:00


Actual result:
--------------
PHP crashes on the "unserialize" line.


------------------------------------------------------------------------



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Edit this bug report at http://bugs.php.net/bug.php?id=53437&edit=1


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