Date differences

[Steve_NI]

I am trying to work the date difference between two dates

I have a form that a user completes and in that form they provide an end date.

In my php I convert this to a unix date:

$stamp = strtotime($_POST['endldate']);
$endDate = date('Y-m-d', $stamp);

 

I then want todays date:

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

 

I then want to get the difference in days between the two.

I have tried $difference = datediff($endDate,$today)

 

But this returns an error = date_diff() expects parameter 1 to be DateTime

 

 

What i want to do is then divide the difference by 7 to get the number of weeks

 

How do I get around the error?

[Ch0cu3r]

You need to initialise your dates with the DateTime object before you use date_diff()

 

See examples here
http://www.php.net/manual/en/datetime.diff.php

Edited November 24, 2013 by Ch0cu3r

[Steve_NI]

You need to initialise your dates with the DateTime object before you use date_diff()

 

See examples here

http://www.php.net/manual/en/datetime.diff.php

 I followed the examples with my code:

$start = date_create($goalDate);
$end = date_create($today);
$interval = date_diff($goalDate,$today);

I still get the same error as before : date_diff() expects parameter 1 to be DateTime

The examples seem to use hard coded dates, but mine will depend on what the user inserts and also will differ dependent upon the current date.

[objnoob]

$goalDate is the string..  $start is the DateTime object

 

So    

 

$interval = date_diff($start,$end);

Edited November 24, 2013 by objnoob

[Steve_NI]

$goalDate is the string..  $start is the DateTime object

 

So    

 

$interval = date_diff($start,$end);

Thanks for your help

When I try:

$today = date('Y-m-d');
$start = date_create($goalDate);

$interval = date_diff($start,$today);

I get the error : date_diff() expects parameter 2 to be DateTime, string given

 

But when I then make the second parameter a string:

$start = date_create($goalDate);
$end = date_create($today);

$interval = date_diff($start,$end);

I get the error: Object of class DateInterval could not be converted to string

 

I'm getting myself very confused all I want is a number of days between the two dates that I could divide by 7 to work out the number of weeks between the them

[objnoob]

$objToday = new DateTime(date('Y-m-d'));  #  create datetime object for today

$objStart = new DateTime($goalDate);          # create datetime object for goal date


$objDuration = $objStart->diff($objToday, true);     # create a DateInterval object using the diff method of our $objStart datetime object passing in $objToday.


echo 'Days since start date: ' . $objDuration->format('d');    #  call the format method of our DateInterval object to say we just want the number of FULL (whole) DAYS  since the start

[Barand]

For the interval format you need format('%a')

 

eg

$goalDate = '2013-06-20';
$objToday = new DateTime();
$objStart = new DateTime($goalDate);

$objDuration = $objStart->diff($objToday, true);

echo 'Days since start date: ' . $objDuration->format('d');   // --> d
echo 'Days since start date: ' . $objDuration->format('%d');  // --> 4  (days remaining after months calculated)
echo 'Days since start date: ' . $objDuration->format('%a');  // --> 157  (total days)
// or
echo 'Days since start date: ' . $objDuration->days;  // --> 157

Edited November 24, 2013 by Barand

[Steve_NI]

$objToday = new DateTime(date('Y-m-d'));  #  create datetime object for today
$objStart = new DateTime($goalDate);          # create datetime object for goal date

$objDuration = $objStart->diff($objToday, true);     # create a DateInterval object using the diff method of our $objStart datetime object passing in $objToday.

echo 'Days since start date: ' . $objDuration->format('d');    #  call the format method of our DateInterval object to say we just want the number of FULL (whole) DAYS  since the start

Appreciate your efforts I tried that but it printed out Days since start date d !

[objnoob]

ooops  change   

 

 

For the interval format you need format('%a')

 

eg

$goalDate = '2013-06-20';
$objToday = new DateTime();
$objStart = new DateTime($goalDate);

$objDuration = $objStart->diff($objToday, true);

echo 'Days since start date: ' . $objDuration->format('d');   // --> d
echo 'Days since start date: ' . $objDuration->format('%d');  // --> 4  (days remaining after months calculated)
echo 'Days since start date: ' . $objDuration->format('%a');  // --> 157  (total days)
// or
echo 'Days since start date: ' . $objDuration->days;  // --> 157

 

Thanks      Use %a , I mean use  $objDuration->days;   lol

Edited November 24, 2013 by objnoob