[PHP]Dateマネージャー(DateTime)

datemanager.class.php

<?php
/**
 * Dateマネージャー(DateTime)
 * 
 */
class DateManager
{
    private $datetime = null;
    private $dateInterval = null;
    
    /**
     * コンストラクタ
     * @access public
     * @param  string $date     :日付
     * @param  string $timezone :タイムゾーン
     * @throws LogicException   :ErrorMessage
     */
    public function __construct($date, $timezone = 'Asia/Tokyo')
    {
        try {
            $this->datetime = new DateTime($date, new DateTimeZone($timezone));
        } catch (Exception $e) {
            throw new LogicException($e->getMessage());
        }
        
    }


    /**
     * タイムゾーン設定
     * @access public
     * @param  string $timezone :タイムゾーン
     * @throws LogicException   :ErrorMessage
     */
    public function setTimeZone($timezone)
    {        
        if(!$this->datetime->setTimeZone(new DateTimeZone($timezone))) {
            throw new LogicException('Failed to set TimeZone');
        }
    }


    /**
     * インターバル設定
     * @access public
     * @param  string $interval :インターバル
     * @throws LogicException   :ErrorMessage
     */
    public function setInterval($interval)
    {
        try {
            $this->dateInterval = new DateInterval($interval);
        } catch (Exception $e) {
            throw new LogicException($e->getMessage());
        }
    }


    /**
     * DateTimeオブジェクトを返す
     * @access public
     * @return Object $datetime
     */
    public function getObj()
    {
        return $this->datetime;
    }


    /**
     * 日付を返す
     * @access public
     * @param  string $format   :日付フォーマット
     * @return string $date     :日付
     */
    public function getDate($format)
    {
        if (!$date = $this->datetime->format($format)) {
            throw new LogicException('Failed to format');
        }
        
        return $date;
    }

    
    /**
     * 日付加算
     * @access public
     * @param  string $format   :日付フォーマット
     * @throws LogicException   :ErrorMessage
     * @return string $date     :日付
     */
    public function addDate($format)
    {
        if (!is_object($this->dateInterval)) {
            throw new LogicException('Inaterval is not set');
        }
        
        $datetime = clone $this->datetime;
        $date = $datetime->add($this->dateInterval)->format($format);
        if (!$date) {
            throw new LogicException('Failed to add Date');
        }

        return $date;
    }


    /**
     * 日付減算
     * @access public
     * @param  string $format   :日付フォーマット
     * @throws LogicException   :ErrorMessage
     * @return string $date     :日付
     */
    public function subDate($format)
    {
        if (!is_object($this->dateInterval)) {
            throw new LogicException('Inaterval is not set');
        }
        
        $datetime = clone $this->datetime;
        $date = $datetime->sub($this->dateInterval)->format($format);
        if (!$date) {
            throw new LogicException('Failed to sub Date');
        }

        return $date;
    }


   /**
     * 日付差分
     * @access public
     * @param  string $date     :日付
     * @param  string $format   :日付フォーマット
     * @param  bool   $abs      :absolute default = false
     * @throws LogicException   :ErrorMessage
     * @return string result    :差分 default 総日数
     */
    public function diffDate($date, $format = '%a', $abs = false)
    {
        try {
            $diffObj = new DateTime($date);
        } catch (Exception $e) {
            throw new LogicException($e->getMessage());
        }

        $diff = $this->datetime->diff($diffObj);

        return $diff->format($format);
    }


    /**
     * 繰り返し演算
     * @access public
     * @param  string $date            :日付
     * @param  string $format          :日付フォーマット
     * @return Array  $dateArray       :日付配列
     */
    public function period($date, $format)
    {
        if (!is_object($this->dateInterval)) {
            throw new LogicException('Inaterval is not set');
        }
        
        $date = $date . ' +1 sec';
        $period = new DatePeriod(
            $this->datetime,
            $this->dateInterval,
            new DateTime($date)
        );

        foreach ($period as $day) {
            $dateArray[] = $day->format($format);
        }

        return $dateArray;
    }
    
    
    /**
     * 繰り返し演算(回数)
     * @access public
     * @param  int    $repeat          :繰り返し回数 
     * @param  string $format          :日付フォーマット
     * @return Array  $dateArray       :日付配列
     */
    public function repeat($repeat, $format)
    {
        if (!is_object($this->dateInterval)) {
            throw new LogicException('Inaterval is not set');
        }
        
        $period = new DatePeriod(
            $this->datetime,
            $this->dateInterval,
            $repeat
        );

        foreach ($period as $day) {
            $dateArray[] = $day->format($format);
        }

        return $dateArray;
    }
}