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<?php function getDiffInHours(\DateTime $earlierDate, \DateTime $laterDate) { $utc = new \DateTimeZone('UTC'); //First convert to UTC to avoid missing hours due to DST etc $earlierDate->setTimezone($utc); $laterDate->setTimezone($utc); $diff = $earlierDate->diff($laterDate); return 24 * $diff->days + $diff->h; } $earlierTime = new \DateTime(); $laterTime = new \DateTime('+ 31 hours'); $hours = getDiffInHours($earlierTime, $laterTime); var_dump($hours, $earlierTime, $laterTime);
Output for git.master
int(31) object(DateTime)#1 (3) { ["date"]=> string(26) "2013-11-11 22:13:20.003604" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } object(DateTime)#2 (3) { ["date"]=> string(26) "2013-11-13 05:13:20.003616" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for git.master_jit
int(31) object(DateTime)#1 (3) { ["date"]=> string(26) "2013-11-11 22:13:20.003804" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } object(DateTime)#2 (3) { ["date"]=> string(26) "2013-11-13 05:13:20.003817" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for rfc.property-hooks
int(31) object(DateTime)#1 (3) { ["date"]=> string(26) "2013-11-11 22:13:20.003944" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } object(DateTime)#2 (3) { ["date"]=> string(26) "2013-11-13 05:13:20.003953" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }

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