get next and previous day with PHP

I have got two arrows set up, click for next day, next two days, soon and previous day, two days ago, soon. the code seem not working? as it only get one next and previous day.

<a href="home.php?date=<?= date('Y-m-d', strtotime('-1 day', strtotime($date))) ?>" class="prev_day" title="Previous Day" ></a> 
<a href="home.php?date=<?= date('Y-m-d', strtotime('+1 day', strtotime($date))) ?>" class="next_day" title="Next Day" ></a>

is t开发者_运维问答here a way if i click the next button, the date will continously change for the next day. for a moment it will only get one day ahead

---

date('Y-m-d', strtotime('+1 day', strtotime($date)))

Should read

date('Y-m-d', strtotime(' +1 day'))

---

Update to answer question asked in comment about continuously changing the date.

<?php
$date = isset($_GET['date']) ? $_GET['date'] : date('Y-m-d');
$prev_date = date('Y-m-d', strtotime($date .' -1 day'));
$next_date = date('Y-m-d', strtotime($date .' +1 day'));
?>

<a href="?date=<?=$prev_date;?>">Previous</a>
<a href="?date=<?=$next_date;?>">Next</a>

This will increase and decrease the date by one from the date you are on at the time.

---

Requirement: PHP 5 >= 5.2.0

You should make use of the DateTime and DateInterval classes in Php, and things will turn to be very easy and readable.

Example: Lets get the previous day.

// always make sure to have set your default timezone
date_default_timezone_set('Europe/Berlin');

// create DateTime instance, holding the current datetime
$datetime = new DateTime();

// create one day interval
$interval = new DateInterval('P1D');

// modify the DateTime instance
$datetime->sub($interval);

// display the result, or print_r($datetime); for more insight 
echo $datetime->format('Y-m-d');


/** 
* TIP:
* if you dont want to change the default timezone, use
* use the DateTimeZone class instead.
*
* $myTimezone = new DateTimeZone('Europe/Berlin');
* $datetime->setTimezone($myTimezone); 
*
* or just include it inside the constructor 
* in this form new DateTime("now",   $myTimezone);
*/

References: Modern PHP, New Features and Good Practices By Josh Lockhart

---

Use

$time = time();

For previous day -

date("Y-m-d", mktime(0,0,0,date("n", $time),date("j",$time)- 1 ,date("Y", $time)));

For 2 days ago

date("Y-m-d", mktime(0,0,0,date("n", $time),date("j",$time) -2 ,date("Y", $time)));

For Next day -

date("Y-m-d", mktime(0,0,0,date("n", $time),date("j",$time)+ 1 ,date("Y", $time)));

For next 2 days

date("Y-m-d", mktime(0,0,0,date("n", $time),date("j",$time) +2 ,date("Y", $time)));

---

Simply use this

echo date('Y-m-d',strtotime("yesterday"));
echo date('Y-m-d',strtotime("tomorrow"));

---

it is enough to call it this way:

<a href="home.php?date=<?= date('Y-m-d', strtotime('-1 day')) ?>" class="prev_day" title="Previous Day" ></a>
<a href="home.php?date=<?= date('Y-m-d', strtotime('+1 day')) ?>" class="next_day" title="Next Day" ></a>

Also see the documentation.

---

strtotime('-1 day', strtotime($date))

This returns the number of difference in seconds of the given date and the $date.so you are getting wrong result .

Suppose $date is todays date and -1 day means it returns -86400 as the difference and the when you try using date you will get 1969-12-31 Unix timestamp start date.

---

You could use 'now' as string to get today's/tomorrow's/yesterday's date:

$previousDay = date('Y-m-d', strtotime('now - 1day'));
$toDay       = date('Y-m-d', strtotime('now'));
$nextDay     = date('Y-m-d', strtotime('now + 1day'));

---

always make sure to have set your default timezone

date_default_timezone_set('Europe/Berlin');

create DateTime instance, holding the current datetime

$datetime = new DateTime();

create one day interval

$interval = new DateInterval('P1D');

modify the DateTime instance

$datetime->sub($interval);

display the result, or print_r($datetime); for more insight

echo $datetime->format('Y-m-d');

TIP:

If you don't want to change the default timezone, use the DateTimeZone class instead.

$myTimezone = new DateTimeZone('Europe/Berlin');
$datetime->setTimezone($myTimezone); 

or just include it inside the constructor in this form new DateTime("now", $myTimezone);

---

Php script -1****its to Next Date

<?php

$currentdate=date('Y-m-d');


$date_arr=explode('-',$currentdate);


$next_date=
Date("Y-m-d",mktime(0,0,0,$date_arr[1],$date_arr[2]+1,$date_arr[0]));



echo $next_date;
?>**

**Php script -1****its to Next year**


<?php

$currentdate=date('Y-m-d');


$date_arr=explode('-',$currentdate);


$next_date=
Date("Y-m-d",mktime(0,0,0,$date_arr[1],$date_arr[2],$date_arr[0]+1));



echo $next_date;
?>

---

just in case if you want next day or previous day from today's date

date("Y-m-d", mktime(0, 0, 0, date("m"),date("d")-1,date("Y")));

just change the "-1" to the "+1" regards, Yosafat

---

Very easy with the dateTime() object, too.

$tomorrow = new DateTime('tomorrow');
echo $tomorrow->format("Y-m-d"); // Tomorrow's date

$yesterday = new DateTime('yesterday');
echo $yesterday->format("Y-m-d"); // Yesterday's date