Get the difference between two date or two datetime

datetime-difference.php

<?php
    // Date time difference
    $dt = date_diff(date_create('2017-01-01 02:20:10'), date_create('2017-02-01 23:23:23'));
    var_dump($dt);
    
    // Date difference
    $d = date_diff(date_create('2017-01-01'), date_create('2017-02-01'));
    var_dump($d);