php – 计算日期范围内的天数在另一个日期范围内

$user_input_start_date = getdate( $a );
$user_input_end_date = getdate( $b );

$start_date_new = mktime( 12,$user_input_start_date['mon'],$user_input_start_date['mday'],$user_input_start_date['year'] );
$end_date_new = mktime( 12,$user_input_end_date['mon'],$user_input_end_date['mday'],$user_input_end_date['year'] );

return round( abs( $start_date_new - $end_date_new ) / 86400 );

这个问题的关键是尽可能地简化它.我认为使用数组作为查询表来获取一年中每一天的成本是可行的方法.首先要做的是生成数组.该数组仅代表一年中的每一天,并不代表任何特定年份.我选择使用2012来生成查找数组,因为它是闰年,因此每天都有可能.

function getSeasonArray()
{
    /**
     * I have chosen 2012 as it was a leap year. All we want to do is
     * generate an array which has avery day of the year in it.
     */
    $startDate = new DateTime('1st January 2012');
    //DatePeriod always drops the last day.
    $endDate = new DateTime('1st January 2013');
    $season2Start = new DateTime('1st April 2012');
    $season2End = new DateTime('1st October 2012');

    $allDays = new DatePeriod($startDate,new DateInterval('P1D'),$endDate);
    $season2Days = new DatePeriod($season2Start,$season2End);

    $seasonArray = array();

    foreach($allDays as $day){
        $seasonArray[] = $day->format('d-M');
        $seasonArray[$day->format('d-M')]['season'] = 1;
    }

    foreach($season2Days as $day){
        $seasonArray[$day->format('d-M')]['season'] = 2;
    }

    return $seasonArray;
}

一旦完成,您只需要计算的时间段： –

$bookingStartDate = new DateTime();//Or wherever you get this from
$bookingEndDate = new DateTime();
$bookingEndDate->setTimestamp(strtotime('+ 7 month'));//Or wherever you get this from
$bookingPeriod = new DatePeriod($bookingStartDate,$bookingEndDate);

然后我们可以做计算： –

$seasons = getSeasonArray();
$totalCost = 0;
foreach($bookingPeriod as $day){
    $totalCost += $seasons[$day->format('d-M')]['season'];
    var_dump($day->format('d-M') . ' = $' . $seasons[$day->format('d-M')]['season']);
}
var_dump($totalCost);

我选择了较长的预订期限,以便您可以浏览var_dump()输出并验证一年中每一天的正确价格.

这是在工作中分散注意力之间的快速刺激,我确信通过一些思考,您可以将其塑造成更优雅的解决方案.我想摆脱双重迭代,不幸的是,工作压力使我无法在此花费更多时间.

有关这些有用类的更多信息,请参见PHP DateTime man page.