I tried with the below code to find the difference between two dates which is passed through post variable and print, but failed.
$fromdate=$_POST['from_date'];
        $todate=$_POST['to_date'];
        $date1 = new DateTime($fromdate); //inclusive
    $date2 = new DateTime($todate); //exclusive
    $diff = $date2->diff($date1);
    echo $diff;
 
     
    