PHP date_interval_format() function

Last Updated : 17 Mar 2025

PHP date_interval_format() for formatting the interval, this function is used in the script. We can also write it as DateInterval::format().

Syntax

Note: Here format is the required string.

Return

This function returns the formatted interval.

Example 1

<?php
$date1=date_create("2018-01-01");
$date2=date_create("2018-02-10");
$diff=date_diff($date1,$date2);
echo $diff->format("Total number of days: %a.");
echo "\n";
echo $diff->format("Total number of days: %R%a.");
echo "\n";
echo $diff->format("Month: %m, days: %d.");
?>

Output:

Total number of days: 40.
Total number of days: +40.
Month: 1, days: 9.

Example 2

<?php
$date1=date_create("2018-01-01");
$date2=date_create("2018-02-10");
$diff=date_diff($date1,$date2);
echo $diff->format("Total number of days: %a.");
echo "\n";
echo $diff->format("Total number of days: %R%a.");
?>

Output:

Total number of days: 40.
Total number of days: +40.

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