PHP | DateTimeImmutable setTimestamp() Function

<?php
// PHP program to illustrate DateTimeImmutable::setTimestamp()
// function
  
// Creating a new DateTimeImmutable() object
$datetimeImmutable = new DateTimeImmutable();

// Initialising a unixtimestamp
$unixtimestamp = '1171564674';

// Calling the DateTimeImmutable::setTimestamp() function
$a = $datetimeImmutable->setTimestamp($unixtimestamp);

// Getting a new set of date and time in the
// format of 'U = d-m-Y H:i:s'
echo $datetimeImmutable->format('U = d-m-Y H:i:s');
?>

<?php
// PHP program to illustrate DateTimeImmutable::setTimestamp()
// function
  
// Creating a new DateTimeImmutable() object
$datetimeImmutable = new DateTimeImmutable();

// Calling the DateTimeImmutable::setTimestamp() function
// with the parameter of unixtimestamp
$a = $datetimeImmutable->setTimestamp(1291564453);

// Getting a new set of date and time in the
// format of 'U = d-m-Y H:i:s'
echo $datetimeImmutable->format('U = d-m-Y H:i:s');
?>