查找PHP中2个日期之间的天数

Question

I have 2 dates and want to know how many the amount of days that come between them.

Lets say these two are the dates

2015-11-16 10:01:13
2015-05-06 09:47:16

The first one being right now, how can I calculate how many days are in between the two given dates?

Answer 1

Following my comment, I thought I would post some examples from the PHP.net manual :

OOP style:

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

Procedural style:

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

Both examples will output:

+2 days

You can also compare word strings as such (when using OOP style, this is an example from PHP.net):

<?php
$date1 = new DateTime("now");
$date2 = new DateTime("tomorrow");
var_dump($date1 == $date2);
var_dump($date1 < $date2);
var_dump($date1 > $date2);
?>

Producing:

bool(false)
bool(true)
bool(false)

Using your dates:

OOP

<?php
$datetime1 = new DateTime('2015-11-16 10:01:13');
$datetime2 = new DateTime('2015-05-06 09:47:16');
$interval = $datetime1->diff($datetime2);
echo $interval->format('%R%a days');
?>

Procedural

<?php
$datetime1 = date_create('2015-11-16 10:01:13');
$datetime2 = date_create('2015-05-06 09:47:16');
$interval = date_diff($datetime1, $datetime2);
echo $interval->format('%R%a days');
?>

Result from both:

-194 days

I sincerely hope this helps :)

Answer 2

Try this. It is very simple.

    <?php

     $date1 = strtotime("2015-11-16 10:01:13");
     $date2 = strtotime("2015-05-06 09:47:16");
     $datediff = $date1 - $date2;
     echo floor($datediff/(60*60*24))." days"; //output 194 days

    ?>