66 lines
2.3 KiB
PHP
66 lines
2.3 KiB
PHP
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<?php
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if(!class_exists('BusinessDaysCalculator')) {
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class BusinessDaysCalculator
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{
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const MONDAY = 1;
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const TUESDAY = 2;
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const WEDNESDAY = 3;
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const THURSDAY = 4;
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const FRIDAY = 5;
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const SATURDAY = 6;
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const SUNDAY = 7;
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/**
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* @param DateTime $startDate Date to start calculations from
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* @param DateTime[] $holidays Array of holidays, holidays are no conisdered business days.
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* @param int[] $nonBusinessDays Array of days of the week which are not business days.
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*/
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public function __construct(DateTime $startDate, array $holidays, array $nonBusinessDays) {
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$this->date = $startDate;
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$this->holidays = $holidays;
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$this->nonBusinessDays = $nonBusinessDays;
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$this->assocHollyday();
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}
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public function assocHollyday()
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{
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$this->holidays[] = new DateTime((date('Y')+1)."-01-01");
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$this->holidays[] = new DateTime(date('Y')."-01-01");
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$this->holidays[] = new DateTime(date('Y')."-05-01");
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$this->holidays[] = new DateTime(date('Y')."-05-08");
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$this->holidays[] = new DateTime(date('Y')."-07-14");
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$this->holidays[] = new DateTime(date('Y')."-08-15");
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$this->holidays[] = new DateTime(date('Y')."-11-11");
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$this->holidays[] = new DateTime(date('Y')."-12-25");
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}
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public function addBusinessDays($howManyDays) {
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$i = 0;
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while ($i < $howManyDays) {
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$this->date->modify("+1 day");
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if ($this->isBusinessDay($this->date)) {
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$i++;
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}
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}
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}
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public function getDate() {
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return $this->date;
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}
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private function isBusinessDay(DateTime $date) {
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if (in_array((int)$date->format('N'), $this->nonBusinessDays)) {
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return false; //Date is a nonBusinessDay.
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}
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foreach ($this->holidays as $day) {
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if ($date->format('Y-m-d') == $day->format('Y-m-d')) {
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return false; //Date is a holiday.
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}
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}
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return true; //Date is a business day.
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}
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}
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}
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