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<?php date_default_timezone_set("Europe/London"); $dt = new DateTime("first day of this month"); var_dump($dt); $dt->modify("-5 month"); var_dump($dt); echo date('m/Y', strtotime("-5 month", strtotime("first day of this month")));
Output for git.master
object(DateTime)#1 (3) { ["date"]=> string(26) "2014-07-01 21:37:09.003682" ["timezone_type"]=> int(3) ["timezone"]=> string(13) "Europe/London" } object(DateTime)#1 (3) { ["date"]=> string(26) "2014-02-01 21:37:09.003682" ["timezone_type"]=> int(3) ["timezone"]=> string(13) "Europe/London" } 02/2014
Output for git.master_jit
object(DateTime)#1 (3) { ["date"]=> string(26) "2014-07-01 21:37:09.003768" ["timezone_type"]=> int(3) ["timezone"]=> string(13) "Europe/London" } object(DateTime)#1 (3) { ["date"]=> string(26) "2014-02-01 21:37:09.003768" ["timezone_type"]=> int(3) ["timezone"]=> string(13) "Europe/London" } 02/2014
Output for rfc.property-hooks
object(DateTime)#1 (3) { ["date"]=> string(26) "2014-07-01 21:37:09.003729" ["timezone_type"]=> int(3) ["timezone"]=> string(13) "Europe/London" } object(DateTime)#1 (3) { ["date"]=> string(26) "2014-02-01 21:37:09.003729" ["timezone_type"]=> int(3) ["timezone"]=> string(13) "Europe/London" } 02/2014

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