<?php
 
function diff($datetime1, $datetime2) {
	$dt_epoch_days= floor(date('U',strtotime($datetime1))/(60*60*24)); 
	$now_epoch_days= floor(date('U', strtotime($datetime2))/(60*60*24)); 
	return  $now_epoch_days-$dt_epoch_days;
}
 
function dateDifference($datetime1, $datetime2, $differenceFormat = '%y year(s) %m month(s) %d day(s) %H:%i:%s' )
{
    $datetime1 = date_create($datetime1);
    $datetime2 = date_create($datetime2);
    $interval = date_diff($datetime1, $datetime2);
 
    return $interval->format($differenceFormat);
 
}
 
$tests = [
	['2025-03-09 01:00', '2025-03-10 4:00'],
	['2025-11-02 01:00', '2025-11-03 4:00'],
];
 
foreach ($tests as $test) {
	[$datetime1, $datetime2] = $test;
	echo $datetime1, ' - ', $datetime2, ': ', diff($datetime1, $datetime2), " days; ",dateDifference($datetime1, $datetime2),"\n";
}

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