The date_diff() is an inbuilt function in PHP which is used to calculate the difference between two dates. This function returns a DateInterval object on the success and returns FALSE on failure.
Syntax:
date_diff($datetime1, $datetime2);
Parameters: The date_diff() function accepts two parameters as mentioned above and described below:
- $datetime1: It is a mandatory parameter which specifies the first DateTime object.
- $datetime2: It is a mandatory parameter which specifies the second DateTime object.
Return Value: It returns the difference between two DateTime objects otherwise, FALSE on failure.
Below programs illustrate the date_diff() function:
Program 1:
<?php // PHP program to illustrate // date_diff() function // creates DateTime objects $datetime1 = date_create( '2017-06-28' );
$datetime2 = date_create( '2018-06-28' );
// calculates the difference between DateTime objects $interval = date_diff( $datetime1 , $datetime2 );
// printing result in days format echo $interval ->format( '%R%a days' );
?> |
Output:
+365 days
Program 2:
<?php // PHP program to illustrate // date_diff() function // difference only in year $datetime1 = date_create( '2017-06-28' );
$datetime2 = date_create( '2018-06-28' );
$interval = date_diff( $datetime1 , $datetime2 );
echo $interval ->format( '%R%a days' ) . "\n" ;
// Difference only in months $datetime1 = date_create( '2018-04-28' );
$datetime2 = date_create( '2018-06-28' );
$interval = date_diff( $datetime1 , $datetime2 );
echo $interval ->format( '%R%a days' ) . "\n" ;
// Difference in year, month, days $datetime1 = date_create( '2017-06-28' );
$datetime2 = date_create( '2018-04-05' );
$interval = date_diff( $datetime1 , $datetime2 );
echo $interval ->format( '%R%a days' ) . "\n" ;
?> |
Output:
+365 days +61 days +281 days
Reference:http://php.net/manual/en/function.date-diff.php