<?php function week_between_two_dates($date1, $date2) { $first = DateTime::createFromFormat('m/d/Y', $date1); $second = DateTime::createFromFormat('m/d/Y', $date2); if($date1 > $date2) return week_between_two_dates($date2, $date1); return floor($first->diff($second)->days/7); } $dt1 = '1/1/2014'; $dt2 = '12/31/2014'; echo 'Weeks between '.$dt1.' and '. $dt2. ' is '. week_between_two_dates($dt1, $dt2)."\n"; ?>
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