opencafe / datium

   * @since Oct, 17 2015

   * @return object

   */

public function ghamariToShamsi( $date_time ) {

$this->date_time = $date_time;

$this->year = $this->date_time->format('Y');

$this->month = $this->date_time->format('m');

$this->day = $this->date_time->format('d');

$days_of_year = 0;

foreach ( $this->config['islamic_month_days'] as $month => $value ) {

  if( $this->month > $month ) $days_of_year += $value;

}

$days_of_year += $this->day;

$days_of_leap_years =  intval( ( ( $this->year - 1 ) / 3 )  );

$days_of_ghamari_years = ( ( ( $this->year - 1 ) * 354 ) + $days_of_year + $days_of_leap_years );

$days_of_shamsi_years = $days_of_ghamari_years + 179;

$days_of_shamsi_years = $days_of_shamsi_years - intval( ( ( $this->year - 43 ) / 4 ) );

$shamsi_month = ( $days_of_shamsi_years % 365 );

$shamsi_year = intval( $days_of_shamsi_years / 365 ) + 1;

foreach ($this->config['shamsi_month_days'] as $month => $value) {

  if ( $shamsi_month < $value ) break;

    $shamsi_month -= $value;

}

  $shamsi_day = $shamsi_month;

  $shamsi_month = $month;

  $this->date_time->setDate( $shamsi_year, $shamsi_month, $shamsi_day );

 return $this->date_time;

}

  /**

    * convert ghamari year to gregorian year

    * @since Oct, 17 2015

    * @return object

    */

  public function ghamariToGregorian( $date_time ) {

    $this->date_time = $date_time;

    $this->year = $this->date_time->format('Y');

    $this->month = $this->date_time->format('m');

    $this->day = $this->date_time->format('d');

    $days_of_year = 0;

    foreach ( $this->config['islamic_month_days'] as $month => $value ) {

      if( $this->month > $month ) $days_of_year += $value;

    }

    $days_of_year += $this->day;

    $days_of_leap_years =  intval( ( ( $this->year - 1 ) / 3 )  );

    $days_of_ghamari_years = ( ( ( $this->year - 1 ) * 354 ) + $days_of_year + $days_of_leap_years );

    $days_of_gregorain_years = $days_of_ghamari_years + 227078;

    $days_of_gregorain_years = $days_of_gregorain_years - intval( ( ( $this->year + 578 ) / 4 ) );

    $gregorian_month = ( $days_of_gregorain_years % 365 );

    $gregorian_year = intval( $days_of_gregorain_years / 365 ) + 1;

    foreach ($this->config['gregorian_month_days'] as $month => $value) {

      if ( $gregorian_month < $value ) break;

        $gregorian_month -= $value;

    }

      $gregorian_day = $gregorian_month;

      $gregorian_month = $month;

      $this->date_time->setDate( $gregorian_year, $gregorian_month, $gregorian_day );

     return $this->date_time;

  }

}

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