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<?php $serviceStart = new DateTime('8/20/2012'); $serviceEnd = $serviceStart->modify('+2 years'); $diff = $serviceStart->diff($serviceEnd); var_dump($diff->format('%a'), $serviceStart, $serviceEnd); $serviceStart = new DateTime('8/20/2012'); $serviceEnd = (new DateTime('8/20/2012'))->modify('+2 years'); $diff = $serviceStart->diff($serviceEnd); var_dump($diff->format('%a'), $serviceStart, $serviceEnd);
Output for git.master, git.master_jit, rfc.property-hooks
string(1) "0" object(DateTime)#1 (3) { ["date"]=> string(26) "2014-08-20 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#1 (3) { ["date"]=> string(26) "2014-08-20 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } string(3) "730" object(DateTime)#3 (3) { ["date"]=> string(26) "2012-08-20 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#4 (3) { ["date"]=> string(26) "2014-08-20 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }

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