PHP | date_date_set() Function

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The date_date_set() function is an inbuilt function in PHP which is used to set a new Date. This function has four parameters $object, $year, $month and $day and returns DateTime object on success or false on failure. The date_date_set() function is an alias of DateTime::setDate() function.

Syntax:

date_date_set( $object, $year, $month, $day )

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

$object: It is a mandatory parameter which is used to specify the DateTime object which is returned by the date_create() function.
$year: It is a mandatory parameter which is used to specify the year of the date.
$month: It is a mandatory parameter which is used to specify the month of the date.
$day: It is a mandatory parameter which is used to specify the day of the date.

Return Value:This function returns a new DateTime object on success or FALSE on failure.

Below programs illustrate the date_date_set() function in PHP.

Program 1: Procedural style to print DateTime.

<?php 
  
// Date_create() returns a new DateTime object. 
$date = date_create(); 
  
// date_date_set() function 
date_date_set($date, 2018, 8, 31); 
  
// Print the date in a format 
echo date_format($date, "Y/m/d"); 
?> 

Output:

2018/08/31

Program 2: Object oriented style to print DateTime.

<?php 
  
// Declare DateTime object. 
$date = new DateTime(); 
  
// date_date_set() function 
$date->setDate(2018, 8, 31); 
  
// Print the date in a format 
echo $date->format('Y/m/d'); 
?> 