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run code in 300+ PHP versions simultaneously
<?php //phpinfo(); $dp = new DatePeriod(new DateTime('2010-01-01 UTC'), new DateInterval('P1D'), 2); echo "Original:\r\n"; foreach($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"; }

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