Update Database every 3 Days..

every_number_of_days.php

<?php
$_updateday = 3;
$_endofdays = 31;
$_monthsend = 12;
$_days = date("d");
$_months = date("m");
$_nowday;
$_nowmonth;
$_moddays;
if($_days >= $_endofdays){
	if($_months == $_monthsend){
		$_moddays = "00";
		$_nowmonth = 1;
	}elseif($_months < $_monthsend){
		$_moddays = $_endofdays;
		$_nowmonth = $_months + 1;
	}else{
		$_moddays = $_endofdays;
		$_nowmonth = $_months;
	}
	$_endofdays = $_moddays;
	$_nowday = $_days - cal_days_in_month(CAL_GREGORIAN,date("m"),date("Y"));
	$_nowday = $_nowday + $_updateday;//Add 3 more Days..
	echo(date("Y-".($_nowmonth)."-".($_nowday))."\r\n");
}elseif($_days < $_endofdays){
	$_endofdays = "00";
	$_nowmonth = $_months;
	$_nowday = $_days;
}
$_dateref = ((date("Y-m"))."-".($_endofdays));
$_refdate = date_create($_dateref);
$_date = date_create(date("Y-".($_nowmonth)."-".($_nowday)));
$_update = $_date -> diff($_refdate) -> format("%a");
$_mod = $_update % $_updateday;
switch($_mod){
	case(0):
		$_show_msg = "Fetch from Database..";
	break;
	case(1):
		if($_update == 331){
			//Normal Year (365) Days
			$_show_msg = "Fetch from Database..";
		}elseif($_update != 331){
			$_show_msg = "Never Update..";
		}
	break;
	case(2):
		if($_update == 332){
			//Leap Year (366) Days
			$_show_msg = "Fetch from Database..";
		}elseif($_update != 332){
			$_show_msg = "Never Update..";
		}
	break;
	default:
		$_show_msg = "Never Update..";
	break;
}
echo($_dateref."\r\n");
echo(($_date -> format("Y-m-d"))." : ".($_update)." : ".($_mod)." : ".($_show_msg)."\r\n");
?>