PHP | DateTimeImmutable setTimestamp() Function

Last Updated : 10 Oct, 2019

The DateTimeImmutable::setTimestamp() function is an inbuilt function in PHP which is used to set the date and time based on an Unix timestamp.

Syntax:

DateTimeImmutable DateTimeImmutable::setTimestamp( int $unixtimestamp )

Parameters: This function accepts single parameter $unixtimestamp which is used to set the Unix timestamp representing the date.

Return Values: This function returns the DateTimeImmutable object.

Below programs illustrate the DateTimeImmutable::setTimestamp() function in PHP:

Program 1:

<?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'); 
?> 

Output:

1570187170 = 04-10-2019 11:06:10

Program 2:

<?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'); 
?> 