<?php$date_arr=array(0=>'20-05-2015',1=>'02-01-2015',2=>'30-03-2015');usort($date_arr, function($a, $b) { $dateTimestamp1 = strtotime($a); $dateTimestamp2 = strtotime($b); return $dateTimestamp1 < $dateTimestamp2 ? -1: 1;});echo 'Min: ' . $date_arr[0];echo '<br/>';echo 'Max: ' . $date_arr[count($date_arr) - 1];?>
