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<?php date_default_timezone_set('America/Los_Angeles'); $firstOctober = new \DateTime('2016-10-01 00:00:00'); $endOctober = new \DateTime('2016-10-31 00:00:00'); var_dump( $firstOctober->diff($endOctober)->m ); date_default_timezone_set('Europe/Paris'); $firstOctober = new \DateTime('2016-10-01 00:00:00'); $endOctober = new \DateTime('2016-10-31 00:00:00'); var_dump( $firstOctober->diff($endOctober)->m );

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