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<!DOCTYPE html> <html> <body> <?php $date1=date_create("2013-01-01"); $date2=date_create("2013-02-10"); $diff=date_diff($date1,$date2); // %a outputs the total number of days echo $diff->format("Total number of days: %a."); echo "<br>"; // %R outputs + beacause $date2 is after $date1 (a positive interval) echo $diff->format("Total number of days: %R%a."); echo "<br>"; // %d outputs the number of days that is not already covered by the month echo $diff->format("Month: %m, days: %d."); ?> </body> </html>