営業日カレンダーを表示するクラス

class-business-calendar.php

<?php
class business_calendar {
	const WEEK = 7; // 1 week is 7 days
	
	// holiday_of_week flag index
	const IDX_SUNDAY = 0;
	const IDX_MONDAY = 1;
	const IDX_TUESDAY = 2;
	const IDX_WEDNESDAY = 3;
	const IDX_THURSDAY = 4;
	const IDX_FRIDAY = 5;
	const IDX_SATURDAY = 6;
	
	protected $year = "";
	protected $month = "";
	protected $calendar = array();
	protected $holiday_of_week = array();
	protected $exception_holidays = array();
	protected $exception_business_days = array();
	
	function __construct($year, $month) {
		$this->year = $year;
		$this->month = $month;
		$this->set_holiday_of_week();
		$this->clear_exception_holidays();
		$this->clear_exception_business_days();
	}
	
	function __destruct() {
		
	}
	
	
	/**
	 * 毎週の曜日休みを設定する 
	 */
	public function set_holiday_of_week($sunday = false , $monday = false , $tuesday = false , $wednesday = false , $thursday = false , $friday = false , $saturday = false ) {
		$holiday_of_week = array();
		
		$holiday_of_week[self::IDX_SUNDAY] = $sunday;
		$holiday_of_week[self::IDX_MONDAY] = $monday;
		$holiday_of_week[self::IDX_TUESDAY] = $tuesday;
		$holiday_of_week[self::IDX_WEDNESDAY] = $wednesday;
		$holiday_of_week[self::IDX_THURSDAY] = $thursday;
		$holiday_of_week[self::IDX_FRIDAY] = $friday;
		$holiday_of_week[self::IDX_SATURDAY] = $saturday;
		
		$this->holiday_of_week = $holiday_of_week;
	}
	
	/**
	 * 休日・稼働日の定義をクリアする
	 */
	protected function clear_days(&$array_target) {
		$array_target = array();
	}
	public function clear_exception_holidays() {
		$this->clear_days($this->exception_holidays);
	}
	public function clear_exception_business_days() {
		$this->clear_days($this->exception_business_days);
	}
	
	/**
	 * 休日・稼働日の定義を追加する
	 */
	protected function add_day($year,$month,$day,&$array_target) {
		$date = date('Ymd', mktime(0,0,0,$month,$day,$year));
		if(!in_array($date,$array_target)) {
			$array_target[] = $date;
		}
	}
	 
	public function add_exception_holiday($year,$month,$day) {
		$this->add_day($year, $month, $day, $this->exception_holidays);
	}
	public function add_exception_business_day($year,$month,$day) {
		$this->add_day($year, $month, $day, $this->exception_business_days);
	}
	
	/**
	 * 休日・稼働日の定義を削除する
	 */
	protected function remove_day($year,$month,$day,&$array_target) {
		$date = date('Ymd', mktime(0,0,0,$month,$day,$year));
		$key = array_search($date,$array_target);
		if( $key !== false ) {
			array_splice($array_target, $key+1, 1);
		}
	}
	public function remove_exception_holidays($year,$month,$day) {
		$this->remove_day($year, $month, $day, $this->exception_holidays);
	}
	public function remove_exception_business_days($year,$month,$day) {
		$this->remove_day($year, $month, $day, $this->exception_business_days);
	}
	
	/**
	 * 稼働日チェック
	 */
	protected function is_businesday_day($day) {
		
		$time = mktime(0,0,0,$this->month,$day,$this->year);
		$week_day = (int)date("w",$time);
		$date     = date("Ymd",$time);
		
		if( in_array( $date, $this->exception_business_days ) ) {
			return true;
		}
		if( in_array( $date, $this->exception_holidays ) ) {
			return true;
		}
		if( isset($this->holiday_of_week[$week_day]) && $this->holiday_of_week[$week_day]) {
			return false;
		}
		return true;
	}
	
	/**
	 * 休日チェック
	 */
	protected function is_holiday($day) {
		
		$time = mktime(0,0,0,$this->month,$day,$this->year);
		$week_day = (int)date("w",$time);
		$date     = date("Ymd",$time);
		
		if( in_array( $date, $this->exception_business_days ) ) {
			return false;
		}
		if( in_array( $date, $this->exception_holidays ) ) {
			return true;
		}
		if( isset($this->holiday_of_week[$week_day]) && $this->holiday_of_week[$week_day]) {
			return true;
		}
		return false;
	}
	
	/**
	 * カレンダーの値を計算
	 */
	protected function calc_calendar() {
		
		$first_day = mktime(0,0,0,$this->month,1,$this->year);
		$start_offset = (int)date("w",$first_day);
		$month_days   = (int)date("t",$first_day);
		
		$calendar = array();
		$day = 1;
		
		while($day < $month_days):
		
			$row = array();
			for($i = 0; $i < self::WEEK; $i++) {
				
				if( ( $day == 1 && $i < $start_offset ) || $day > $month_days) {
					$row[] = array("day" => "", "is_holiday" => false);
					continue;
				}
				$holiday_flag = $this->is_holiday($day);
				$date = date("Y年m月d日", mktime(0,0,0,$this->month,$day,$this->year));
				$day_data = array(
								"day" => $day,
								"is_holiday" => $holiday_flag,
								"value" => $date
							);
				
				$row[] = $day_data;
				$day++;
			}
			$calendar[] = $row;
			
		endwhile;
		// var_dump($calendar);
		
		$this->calendar = $calendar;
	}
	
	/**
	 * カレンダー出力
	 */
	public function render() {
		$this->calc_calendar();
		echo $this->get_table_header();
		echo $this->get_table_body();
		echo $this->get_table_footer();
	}
	
	protected function get_table_header() {
		$date = date("Y年m月", mktime(0,0,0,$this->month,1,$this->year));
		$html = '<table class="calendar">
				<caption>' . $date .  '</caption>
				<thead>
					<tr>
						<th class="calendar-day-sunday">日</th>
						<th class="calendar-day-monday">月</th>
						<th class="calendar-day-tuesday">火</th>
						<th class="calendar-day-wednesday">水</th>
						<th class="calendar-day-thursday">木</th>
						<th class="calendar-day-friday">金</th>
						<th class="calendar-day-saturday">土</th>
					</tr>
				</thead>
				<tbody>';
		
		return $html;
	}
	
	protected function get_table_body() {
		$html = "";
		foreach ($this->calendar as $row ) {
			$html .= "<tr>";
			foreach ($row as $day) {
				$html .= $this->get_table_cell($day);
			}
			$html .= "</tr>";
		}
		return $html;
	}
	
	protected function get_table_cell($day) {

		if(empty($day["day"])) {
			return "<td class='calendar-cell-empty'></td>";
		}
		$html = "";
		$td_class = 'calendar-cell';
		$td_class .= $day["is_holiday"] ? ' calendar-cell-holiday ' : ' calendar-cell-business-day ';
		
		$html .= "<td class='{$td_class}'>";
		$html .= '<div>' . $day["day"] . '</div>';
		if( $day["is_holiday"] ) {
			// 休日
			$html .= "休";
		} else {
			// 営業日
			$html .= "営業";
		}
		$html .= "</td>";
		return $html;
	}
	
	protected function get_table_footer() {
		return '</tbody>
				</table>';
	}
}