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run code in 150+ php & hhvm versions
Bugs & Features
<?php date_default_timezone_set('Europe/Warsaw'); $today = new DateTime(); echo $today->format('O') . " - today"; echo "\n"; $f = new DateTime('2014-10-25 02:00:00'); echo $f->format('O') . " - last Friday 2:00 " . $f->getTimestamp(); echo "\n"; $sunday = new DateTime('2014-10-26 02:00:00'); echo $sunday->format('O') . " - last Sunday 2:00 " . $sunday->getTimestamp(); echo "\n"; $sunday2 = new DateTime('2014-10-26 01:59:59'); echo $sunday2->format('O') . " - last Sunday 1:59 " . $sunday2->getTimestamp(); echo "\n"; echo $sunday->getTimestamp() - $sunday2->getTimestamp();
based on bsvp9
Output for 5.3.0 - 5.4.34, 5.5.31 - 5.5.33, 5.6.17 - 5.6.19, 5.6.28, 7.0.0 - 7.0.4, 7.0.14 - 7.1.0
+0100 - today +0200 - last Friday 2:00 1414195200 +0100 - last Sunday 2:00 1414285200 +0200 - last Sunday 1:59 1414281599 3601
Output for 5.4.35 - 5.5.30, 5.5.34 - 5.6.16, 5.6.20 - 5.6.21, hhvm-3.12.0, 7.0.5 - 7.0.6
+0200 - today +0200 - last Friday 2:00 1414195200 +0100 - last Sunday 2:00 1414285200 +0200 - last Sunday 1:59 1414281599 3601
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.2.0 - 5.2.17
+0100 - today Fatal error: Call to undefined method DateTime::getTimestamp() in /in/LOVIi on line 9
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/LOVIi on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function date_default_timezone_set() in /in/LOVIi on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: date_default_timezone_set() in /in/LOVIi on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: date_default_timezone_set() in /in/LOVIi on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: date_default_timezone_set() in /in/LOVIi on line 2