Finding the number of days between two dates

Question

How to find number of days between two dates using PHP?

Answer 1

Easy to using date_diff

$from=date_create(date('Y-m-d'));
$to=date_create("2013-03-15");
$diff=date_diff($to,$from);
print_r($diff);
echo $diff->format('%R%a days');

• See more at: http://blog.innovsystems.com/php/get-number-days-between-two-dates-php

Answer 2

Object oriented style:

$datetime1 = new DateTime('2009-10-11');
$datetime2 = new DateTime('2009-10-13');
$interval = $datetime1->diff($datetime2);
echo $interval->format('%R%a days');

Procedural style:

$datetime1 = date_create('2009-10-11');
$datetime2 = date_create('2009-10-13');
$interval = date_diff($datetime1, $datetime2);
echo $interval->format('%R%a days');

Answer 3

If you want to echo all days between the start and end date, I came up with this :

$startdatum = $_POST['start']; // starting date
$einddatum = $_POST['eind']; // end date

$now = strtotime($startdatum);
$your_date = strtotime($einddatum);
$datediff = $your_date - $now;
$number = floor($datediff/(60*60*24));

for($i=0;$i <= $number; $i++)
{
    echo date('d-m-Y' ,strtotime("+".$i." day"))."<br>";
}

Answer 4

Well, the selected answer is not the most correct one because it will fail outside UTC. Depending on the timezone (list) there could be time adjustments creating days "without" 24 hours, and this will make the calculation (60*60*24) fail.

Here it is an example of it:

date_default_timezone_set('europe/lisbon');
$time1 = strtotime('2016-03-27');
$time2 = strtotime('2016-03-29');
echo floor( ($time2-$time1) /(60*60*24));
 ^-- the output will be **1**

So the correct solution will be using DateTime

date_default_timezone_set('europe/lisbon');
$date1 = new DateTime("2016-03-27");
$date2 = new DateTime("2016-03-29");

echo $date2->diff($date1)->format("%a");
 ^-- the output will be **2**

Answer 5

function howManyDays($startDate,$endDate) {

    $date1  = strtotime($startDate." 0:00:00");
    $date2  = strtotime($endDate." 23:59:59");
    $res    =  (int)(($date2-$date1)/86400);        

return $res;
} 

Answer 6

I'm using Carbon in my composer projects for this and similar purposes.

It'd be as easy as this:

$dt = Carbon::parse('2010-01-01');
echo $dt->diffInDays(Carbon::now());