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php Datetime Class


Create Immutable version of DateTime from Mutable prior PHP


To create \DateTimeImmutable in PHP 5.6+ use:


\DateTimeImmutable::createFromMutable($concrete);

Prior PHP 5.6 you can use:


\DateTimeImmutable::createFromFormat(\DateTime::ISO8601, $mutable->format(\DateTime::ISO8601),
$mutable->getTimezone());

Add or Subtract Date Intervals


We can use the class DateInterval to add or subtract some interval in a DateTime object.
See the example below, where we are adding an interval of 7 days and printing a message on the screen:


$now = new DateTime();// empty argument returns the current date
$interval = new DateInterval('P7D');//this objet represents a 7 days interval
$lastDay = $now->add($interval); //this will return a DateTime object
$formatedLastDay = $lastDay->format('Y-m-d');

Output

this method format the DateTime object and returns a String

echo "Samara says: Seven Days. You'll be happy on $formatedLastDay.";

Output

Samara says: Seven Days. You'll be happy on 2022-10-01.

getTimestamp


getTimeStemp is a unix representation of a datetime object.


$date = new DateTime();
echo $date->getTimestamp();

Output

1664040501

setDate


setDate sets the date in a DateTime object.


$date = new DateTime();
$date->setDate(2016, 7, 25);

Create DateTime from custom format


PHP is able to parse a number of date formats. If you want to parse a non-standard format, or if you want your code to explicitly state the format to be used, then you can use the static DateTime::createFromFormat method:

Object oriented style


$format = "Y,m,d";
$time = "2009,2,26";
$date = DateTime::createFromFormat($format, $time);

Procedural style


$format = "Y,m,d";
$time = "2009,2,26";
$date = date_create_from_format($format, $time);

Conclusion

In this page (written and validated by ) you learned about PHP Datetime Class . What's Next? If you are interested in completing PHP tutorial, your next topic will be learning about: PHP difference between two dates.



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