Write a program in PHP to find no of days between two dates

 <?php

function dateDiffDays($date1, $date2)  {

    $diff = strtotime($date2) - strtotime($date1);

     return abs(round($diff / 86400));

}

$date1 = "01-10-2021";

$date2 = "11-10-2021";

$dateDiff = dateDiffDays($date1, $date2);

printf("Difference between two dates: ". $dateDiff . " Days ");

?>

Output - 

Difference between two dates: 10 Days