PHP | DateTime format() Function

Last Updated : 10 Oct, 2019
The DateTime::format() function is an inbuilt function in PHP which is used to return the new formatted date according to the specified format. Syntax:
  • Object oriented style 
    string DateTime::format( string $format )
    or 
    string DateTimeImmutable::format( string $format )
    or 
    string DateTimeInterface::format( string $format )
  • Procedural style 
    string date_format( DateTimeInterface $object, string $format )
Parameters: This function uses two parameters as mentioned above and described below:
  • $object: This parameter holds the DateTime object.
  • $format: This parameter holds the format accepted by date() function.
Return Value: This function return the new formatted date string on success or False on failure. Below programs illustrate the DateTime::format() function in PHP: Program 1: php 
<?php

// Initialising the DateTime() object with a date
$datetime = new DateTime('2019-09-30');

// Calling the format() function with a 
// specified format 'd-m-Y'
echo $datetime->format('d-m-Y');

?>
Output: 
30-09-2019
Program 2: php 
<?php

// Initialising the DateTime() object with a date
$datetime = new DateTime('2019-09-30');

// Calling the format() function with a 
// specified format 'd-m-Y H:i:s'
echo $datetime->format('d-m-Y H:i:s');

?>
Output: 
30-09-2019 00:00:00
Reference: https://www.php.net/manual/en/datetime.format.php
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