PHP | DateTimeImmutable setDate() Function

Last Updated : 11 Oct, 2019

The DateTimeImmutable::setDate() function is an inbuilt function in PHP which is used to set a new date in the created DateTimeImmutable object.

Syntax:

DateTimeImmutable DateTimeImmutable::setDate( int $year, int $month, int $day )

Parameters: This function accepts three parameters as mentioned above and described below:

$year: This parameter holds the year value in integer format.
$month: This parameter holds the month value in integer format.
$day: This parameter holds the date value in integer format.

Return Values: This function returns the new date object.

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

Program 1:

<?php 
  
// PHP program to illustrate DateTimeImmutable::setDate() 
// function 
    
// Creating a new DateTimeImmutable() object 
$datetimeImmutable = new DateTimeImmutable(); 
  
// Initialising year, month and day 
$Year = '2019'; 
$Month = '10'; 
$Day = '03'; 
  
// Calling the DateTimeImmutable::setDate() function 
$a = $datetimeImmutable->setDate($Year, $Month, $Day); 
  
// Getting a new set of date in the 
// format of 'Y-m-d' 
echo $a->format('Y-m-d'); 
?> 

Output:

2019-10-03

Program 2:

<?php 
  
// PHP program to illustrate DateTimeImmutable::setDate() 
// function 
    
// Creating a new DateTimeImmutable() object 
$datetimeImmutable = new DateTimeImmutable(); 
  
// Calling the setDate() function 
// with parameters like years of 2019, 
// month of 10 and day of 3 
$a = $datetimeImmutable->setDate(2019, 10, 03); 
  
// Getting a new set of date in the 
// format of 'Y-m-d' 
echo $a->format('Y-m-d'); 
?> 