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run code in 200+ php & hhvm versions
Bugs & Features
<?php function datediffInWeeks($date1, $date2) { if($date1 > $date2) return datediffInWeeks($date2, $date1); $first = DateTime::createFromFormat('m/d/Y', $date1); $second = DateTime::createFromFormat('m/d/Y', $date2); return floor($first->diff($second)->days/7); } var_dump(datediffInWeeks('27/06/2017', '04/07/2017'));// 21 //var_dump(datediffInWeeks('6/4/2013', '1/2/2013'));// 21
based on 01rmh
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.6
float(99)