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<html><body>$date1=date_create("2013-01-01");$date2=date_create("2013-02-10");$diff=date_diff($date1,$date2);// %a outputs the total number of daysecho $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 monthecho $diff->format("Month: %m, days: %d.");</body></html>