How can I find the maximum and minimum date in an array?

Question

I need to find the maximum and minimum date from a given array using PHP.

I have $date_arr which contains following values,

  $date_arr = array(\'0\'         


        

Answer 1

'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 '
';
echo 'Max: ' . $date_arr[count($date_arr) - 1];


?>