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<?php $tz = new DateTimeZone('America/Los_Angeles'); $now = new DateTime('03 Nov 2014'); $twoDaysAgo1 = $now->sub(new DateInterval('P2D')); $twoDaysAgo2 = $now->sub(new DateInterval('PT172800S')); $twoDaysAgo3 = new DateTime('@' . ($now->getTimestamp() - 172800)); var_dump($twoDaysAgo1->getTimestamp()); var_dump($twoDaysAgo2->getTimestamp()); var_dump($twoDaysAgo3->getTimestamp());
based on vnWuL
Output for 5.3.3 - 7.1.0
int(1414623600) int(1414623600) int(1414450800)
Output for 5.3.0 - 5.3.2
int(1414274400) int(1414101600) int(1414278000)
Output for 5.2.0 - 5.2.17
Fatal error: Call to undefined method DateTime::sub() in /in/6cSo8 on line 4
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTimeZone' not found in /in/6cSo8 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetimezone in /in/6cSo8 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetimezone in /in/6cSo8 on line 2