Difference in days between two dates
This function will calculate the difference between two given dates. Input time by ISO 8601 standards (yyyy-mm-dd). i.e: daysBetweenDate(‘2009-01-01’, ‘2010-01-01’) will return 365.
function daysBetweenDate($from, $till) { if ($till < $from) { trigger_error("The date till is before the date from", E_USER_NOTICE); } // Explode date since gregoriantojd() requires mm, dd, yyyy input $from = explode('-', $from); $till = explode('-', $till); // Calculate date to Julian Day Count $from = gregoriantojd($from[1], $from[2], $from[0]); //Calculate date to Julian Day Count $till = gregoriantojd($till[1], $till[2], $till[0]); // Substract the days $till from $from to get the amount of days return $till - $from; } |
Get current year minus 10 years
$past_year = date("Y", strtotime("-10 year", time())); |