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<?php $dateinterval = new DateInterval('PT1H'); print_r($dateinterval); echo "\n"; echo json_encode($dateinterval); echo "\n"; $string = $dateinterval->format('%y years %m months %d days %h hours %i minutes %s seconds'); echo $string; echo "\n"; $dateinterval2 = DateInterval::createFromDateString($string); $string2 = $dateinterval2->format('%y years %m months %d days %h hours %i minutes %s seconds'); echo $string;

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