আমি জানি যে আমি পার্টিতে দেরি করেছি, তবে আমি ছুটির দিন এবং ব্যবসায়ের দিনগুলি বের করার জন্য মার্কোস জে মন্টেসের এই পুরানো ফাংশনটি ব্যবহার করি। তিনি ইস্টারের জন্য 1876 সাল থেকে একটি অ্যালগোরিদম যোগ করতে সময় নিয়েছিলেন এবং তিনি মার্কিন যুক্তরাষ্ট্রের সমস্ত বড় ছুটি যুক্ত করেছিলেন। এটি সহজেই অন্যান্য দেশের জন্য আপডেট করা যেতে পারে।
//Usage
$days = 30;
$next_working_date = nextWorkingDay($days, $somedate);
//add date function
function DateAdd($interval, $number, $date) {
$date_time_array = getdate($date);
//die(print_r($date_time_array));
$hours = $date_time_array["hours"];
$minutes = $date_time_array["minutes"];
$seconds = $date_time_array["seconds"];
$month = $date_time_array["mon"];
$day = $date_time_array["mday"];
$year = $date_time_array["year"];
switch ($interval) {
case "yyyy":
$year+=$number;
break;
case "q":
$year+=($number*3);
break;
case "m":
$month+=$number;
break;
case "y":
case "d":
case "w":
$day+=$number;
break;
case "ww":
$day+=($number*7);
break;
case "h":
$hours+=$number;
break;
case "n":
$minutes+=$number;
break;
case "s":
$seconds+=$number;
break;
}
// echo "day:" . $day;
$timestamp= mktime($hours,$minutes,$seconds,$month,$day,$year);
return $timestamp;
}
// the following function get_holiday() is based on the work done by
// Marcos J. Montes
function get_holiday($year, $month, $day_of_week, $week="") {
if ( (($week != "") && (($week > 5) || ($week < 1))) || ($day_of_week > 6) || ($day_of_week < 0) ) {
// $day_of_week must be between 0 and 6 (Sun=0, ... Sat=6); $week must be between 1 and 5
return FALSE;
} else {
if (!$week || ($week == "")) {
$lastday = date("t", mktime(0,0,0,$month,1,$year));
$temp = (date("w",mktime(0,0,0,$month,$lastday,$year)) - $day_of_week) % 7;
} else {
$temp = ($day_of_week - date("w",mktime(0,0,0,$month,1,$year))) % 7;
}
if ($temp < 0) {
$temp += 7;
}
if (!$week || ($week == "")) {
$day = $lastday - $temp;
} else {
$day = (7 * $week) - 6 + $temp;
}
//echo $year.", ".$month.", ".$day . "<br><br>";
return format_date($year, $month, $day);
}
}
function observed_day($year, $month, $day) {
// sat -> fri & sun -> mon, any exceptions?
//
// should check $lastday for bumping forward and $firstday for bumping back,
// although New Year's & Easter look to be the only holidays that potentially
// move to a different month, and both are accounted for.
$dow = date("w", mktime(0, 0, 0, $month, $day, $year));
if ($dow == 0) {
$dow = $day + 1;
} elseif ($dow == 6) {
if (($month == 1) && ($day == 1)) { // New Year's on a Saturday
$year--;
$month = 12;
$dow = 31;
} else {
$dow = $day - 1;
}
} else {
$dow = $day;
}
return format_date($year, $month, $dow);
}
function calculate_easter($y) {
// In the text below, 'intval($var1/$var2)' represents an integer division neglecting
// the remainder, while % is division keeping only the remainder. So 30/7=4, and 30%7=2
//
// This algorithm is from Practical Astronomy With Your Calculator, 2nd Edition by Peter
// Duffett-Smith. It was originally from Butcher's Ecclesiastical Calendar, published in
// 1876. This algorithm has also been published in the 1922 book General Astronomy by
// Spencer Jones; in The Journal of the British Astronomical Association (Vol.88, page
// 91, December 1977); and in Astronomical Algorithms (1991) by Jean Meeus.
$a = $y%19;
$b = intval($y/100);
$c = $y%100;
$d = intval($b/4);
$e = $b%4;
$f = intval(($b+8)/25);
$g = intval(($b-$f+1)/3);
$h = (19*$a+$b-$d-$g+15)%30;
$i = intval($c/4);
$k = $c%4;
$l = (32+2*$e+2*$i-$h-$k)%7;
$m = intval(($a+11*$h+22*$l)/451);
$p = ($h+$l-7*$m+114)%31;
$EasterMonth = intval(($h+$l-7*$m+114)/31); // [3 = March, 4 = April]
$EasterDay = $p+1; // (day in Easter Month)
return format_date($y, $EasterMonth, $EasterDay);
}
function nextWorkingDay($number_days, $start_date = "") {
$day_counter = 0;
$intCounter = 0;
if ($start_date=="") {
$today = mktime(0, 0, 0, date("m") , date("d"), date("Y"));
} else {
$start_time = strtotime($start_date);
$today = mktime(0, 0, 0, date("m", $start_time) , date("d", $start_time), date("Y", $start_time));
}
while($day_counter < $number_days) {
$working_time = DateAdd("d", 1, $today);
$working_date = date("Y-m-d", $working_date);
if (!isWeekend($working_date) && !confirm_holiday(date("Y-m-d", strtotime($working_date))) ) {
$day_counter++;
}
$intCounter++;
$today = $working_time;
if ($intCounter > 1000) {
//just in case out of control?
break;
}
}
return $working_date;
}
function isWeekend($check_date) {
return (date("N", strtotime($check_date)) > 5);
}
function confirm_holiday($somedate="") {
if ($somedate=="") {
$somedate = date("Y-m-d");
}
$year = date("Y", strtotime($somedate));
$blnHoliday = false;
//newyears
if ($somedate == observed_day($year, 1, 1)) {
$blnHoliday = true;
}
if ($somedate == format_date($year, 1, 1)) {
$blnHoliday = true;
}
if ($somedate == format_date($year, 12, 31)) {
$blnHoliday = true;
}
//Martin Luther King
if ($somedate == get_holiday($year, 1, 1, 3)) {
$blnHoliday = true;
}
//President's
if ($somedate == get_holiday($year, 2, 1, 3)) {
$blnHoliday = true;
}
//easter
if ($somedate == calculate_easter($year)) {
$blnHoliday = true;
}
//Memorial
if ($somedate == get_holiday($year, 5, 1)) {
$blnHoliday = true;
}
//july4
if ($somedate == observed_day($year, 7, 4)) {
$blnHoliday = true;
}
//labor
if ($somedate == get_holiday($year, 9, 1, 1)) {
$blnHoliday = true;
}
//columbus
if ($somedate == get_holiday($year, 10, 1, 2)) {
$blnHoliday = true;
}
//thanks
if ($somedate == get_holiday($year, 11, 4, 4)) {
$blnHoliday = true;
}
//xmas
if ($somedate == format_date($year, 12, 24)) {
$blnHoliday = true;
}
if ($somedate == format_date($year, 12, 25)) {
$blnHoliday = true;
}
return $blnHoliday;
}