Bug #75035 [NEW]: Datetime fails to unserialize "extreme" dates

From: weirdan at gmail dot com Operating system: Debian Linux / sid PHP version: 7.1.8 Package: Date/time related Bug Type: Bug Bug description:Datetime fails to unserialize "extreme" dates Description: ------------ It appears that you can construct a DateTime object, that, upon serialize/unserialize cycle will have *different* data or will fail to unserialize. Granted, these dates are outside the range people will typically use, but if DateTime can't work with them reliably it should reject them in constructor. Test script: --------------- <?php var_dump('PHP version', PHP_VERSION); foreach ([PHP_INT_MIN, PHP_INT_MAX] as $extreme) { $i = 64; while ($i --> 0) { $d = new DateTime('@' . ($extreme >> $i)); $s = serialize($d); try { $u = unserialize($s); } catch (Error $e) { $u = "failed unserialization: " . $e->getMessage() . ' : ' . $s; } $original = $d->format('Y-m-d H:i:s'); $serializedUnserialized = is_string($u) ? $u : $u->format('Y-m-d H:i:s'); if ($original !== $serializedUnserialized) { var_dump('[' . ($extreme >> $i) . '] ' . $original . ' => ' . $serializedUnserialized); } } } Expected result: ---------------- string(11) "PHP version" string(5) "7.1.8" Actual result: -------------- string(11) "PHP version" string(5) "7.1.8" string(60) "[-549755813888] -15452-12-06 11:41:52 => 2002-12-06 11:41:52" string(61) "[-1099511627776] -32873-11-12 23:23:44 => 1973-11-12 23:23:44" string(61) "[-2199023255552] -67715-09-22 22:47:28 => 0715-09-22 22:47:28" string(62) "[-4398046511104] -137399-06-15 21:34:56 => 0399-06-15 21:34:56" string(62) "[-8796093022208] -276768-11-27 19:09:52 => 6768-11-27 19:09:52" string(63) "[-17592186044416] -555505-10-25 14:19:44 => 0505-10-25 14:19:44" string(64) "[-35184372088832] -1112979-08-20 04:39:28 => 0979-08-20 04:39:28" string(64) "[-70368744177664] -2227927-04-07 09:18:56 => 0927-04-07 09:18:56" string(65) "[-140737488355328] -4457824-07-13 18:37:52 => 7824-07-13 18:37:52" string(65) "[-281474976710656] -8917617-01-25 13:15:44 => 2007-01-25 13:15:44" string(66) "[-562949953421312] -17837204-02-19 02:31:28 => 2004-02-19 02:31:28" string(67) "[-1125899906842624] -35676378-04-08 05:02:56 => 2008-04-08 05:02:56" string(67) "[-2251799813685248] -71354726-07-14 10:05:52 => 2006-07-14 10:05:52" string(245) "[-4503599627370496] -142711421-01-25 20:11:44 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:{s:4:"date";s:32:"-142711421-01-25 20:11:44.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(68) "[-9007199254740992] -285424812-02-20 16:23:28 => 0812-02-20 16:23:28" string(246) "[-18014398509481984] -570851594-04-11 08:46:56 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:{s:4:"date";s:32:"-570851594-04-11 08:46:56.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(70) "[-36028797018963968] -1141705158-07-20 17:33:52 => 2058-07-20 17:33:52" string(248) "[-72057594037927936] -2283412285-02-07 11:07:44 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:{s:4:"date";s:33:"-2283412285-02-07 11:07:44.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(71) "[-144115188075855872] -4566826540-03-15 22:15:28 => 0540-03-15 22:15:28" string(249) "[-288230376151711744] -9133655050-05-29 20:30:56 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:{s:4:"date";s:33:"-9133655050-05-29 20:30:56.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(251) "[-576460752303423488] -18267312070-10-26 17:01:52 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:{s:4:"date";s:34:"-18267312070-10-26 17:01:52.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(252) "[-1152921504606846976] -36534626109-08-20 10:03:44 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:{s:4:"date";s:34:"-36534626109-08-20 10:03:44.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(73) "[-2305843009213693952] -73069254187-04-08 20:07:28 => 4187-04-08 20:07:28" string(254) "[-4611686018427387904] -146138510344-07-14 16:14:56 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:{s:4:"date";s:35:"-146138510344-07-14 16:14:56.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(254) "[-9223372036854775808] -292277022657-01-27 08:29:53 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:{s:4:"date";s:35:"-292277022657-01-27 08:29:53.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(58) "[274877906943] 10680-07-14 06:09:03 => 2000-07-14 06:09:03" string(230) "[549755813887] 19391-01-25 12:18:07 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:{s:4:"date";s:27:"19391-01-25 12:18:07.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(59) "[1099511627775] 36812-02-20 00:36:15 => 2002-02-20 00:36:15" string(59) "[2199023255551] 71654-04-10 01:12:31 => 2004-04-10 01:12:31" string(233) "[4398046511103] 141338-07-19 02:25:03 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:{s:4:"date";s:28:"141338-07-19 02:25:03.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(60) "[8796093022207] 280707-02-04 04:50:07 => 2007-02-04 04:50:07" string(61) "[17592186044415] 559444-03-08 09:40:15 => 2044-03-08 09:40:15" string(236) "[35184372088831] 1116918-05-14 19:20:31 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:s:4:"date";s:29:"1116918-05-14 19:20:31.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(236) "[70368744177663] 2231866-09-25 14:41:03 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:s:4:"date";s:29:"2231866-09-25 14:41:03.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(63) "[140737488355327] 4461763-06-20 05:22:07 => 0763-06-20 05:22:07" string(63) "[281474976710655] 8921556-12-07 10:44:15 => 0556-12-07 10:44:15" string(239) "[562949953421311] 17841143-11-13 21:28:31 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:s:4:"date";s:30:"17841143-11-13 21:28:31.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(240) "[1125899906842623] 35680317-09-25 18:57:03 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:s:4:"date";s:30:"35680317-09-25 18:57:03.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(65) "[2251799813685247] 71358665-06-19 13:54:07 => 8665-06-19 13:54:07" string(242) "[4503599627370495] 142715360-12-06 03:48:15 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:s:4:"date";s:31:"142715360-12-06 03:48:15.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(242) "[9007199254740991] 285428751-11-12 07:36:31 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:s:4:"date";s:31:"285428751-11-12 07:36:31.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(67) "[18014398509481983] 570855533-09-22 15:13:03 => 2003-09-22 15:13:03" string(245) "[36028797018963967] 1141709097-06-13 06:26:07 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:s:4:"date";s:32:"1141709097-06-13 06:26:07.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(68) "[72057594037927935] 2283416224-11-24 12:52:15 => 2024-11-24 12:52:15" string(69) "[144115188075855871] 4566830479-10-18 01:44:31 => 1979-10-18 01:44:31" string(69) "[288230376151711743] 9133658989-08-04 03:29:03 => 1989-08-04 03:29:03" string(248) "[576460752303423487] 18267316009-03-08 06:58:07 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:s:4:"date";s:33:"18267316009-03-08 06:58:07.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(249) "[1152921504606846975] 36534630048-05-13 13:56:15 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:s:4:"date";s:33:"36534630048-05-13 13:56:15.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(249) "[2305843009213693951] 73069258126-09-25 03:52:31 => failed unserialization: Invalid serialization data for DateTime object : O:8:"DateTime":3:s:4:"date";s:33:"73069258126-09-25 03:52:31.000000";s:13:"timezone_type";i:1;s:8:"timezone";s:6:"+00:00";}" string(72) "[4611686018427387903] 146138514283-06-19 07:45:03 => 4283-06-19 07:45:03" string(72) "[9223372036854775807] 292277026596-12-04 15:30:07 => 6596-12-04 15:30:07" -- Edit bug report at https://bugs.php.net/bug.php?id=75035&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75035&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75035&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75035&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75035&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75035&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75035&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75035&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75035&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75035&r=support Expected behavior: https://bugs.php.net/fix.php?id=75035&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75035&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75035&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75035&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75035&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75035&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75035&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75035&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75035&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75035&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75035&r=mysqlcfg