在PHP中结合每周日程安排和特殊日子查找下一个可用日期

因此，给定日期和时间，您需要下次开放时间的日期和时间. 我假设特殊日期会优先于常规日期.

首先，我们按日期和时间(两个输入数组)排序. 接下来，给定参考日期和时间，我们会发现它是否属于特殊日期，并获取当天的最早时间.

如果该日期没有特殊日期，我们将在正常开放时间寻找同一工作日.

如果仍然没有找到(比如周三)，我们就第二天try 一下.

function getNextOpening($opening_times, $special_opening_times, $reference_datetime)
{

    // day of week of $reference_datetime
    $reference_weekday = date('w', strtotime($reference_datetime));
    if ($reference_weekday === 0) {
        $reference_weekday = 7;
    }

    // time of day of $reference_datetime
    $reference_time = date('H:i:s', strtotime($reference_datetime));

    // date of $reference_datetime
    $reference_date = date('Y-m-d', strtotime($reference_datetime));


    // sort $opening_times by weekday and open time
    usort($opening_times, function ($a, $b) {
        if ($a['weekday'] == $b['weekday']) {
            return strcmp($a['open'], $b['open']);
        }
        return $a['weekday'] - $b['weekday'];
    });

    // sort $special_opening_times by date and open time
    usort($special_opening_times, function ($a, $b) {
        if (strtotime($a['date']) == strtotime($b['date'])) {
            return strcmp($a['open'], $b['open']);
        }
        return strtotime($a['date']) - strtotime($b['date']);
    });

    // find next special date and opening times for SAME date of $reference_datetime
    foreach ($special_opening_times as $special_opening) {
        if ($special_opening['date'] == $reference_date) {
            if (strtotime($special_opening['open']) > strtotime($reference_time)) {
                return $special_opening['date'] . ' ' . $special_opening['open'];
            }
        }
    }

    // no special day, find by regular opening times
    foreach ($opening_times as $opening) {
        if ($opening['weekday'] == $reference_weekday) {
            if ($opening['open'] > $reference_time) {
                return $reference_date. " ". $opening['open'];
            }
        }
    }

    // add 1 day to $reference_date 
    $reference_date = date('Y-m-d', strtotime("+1 day", strtotime($reference_date)));
    return getNextOpening($opening_times, $special_opening_times, $reference_date);

}


$opening_times = [
    ['open' => '09:00:00', 'weekday' => 1], // Monday
    ['open' => '09:00:00', 'weekday' => 2], // Tuesday
    ['open' => '09:00:00', 'weekday' => 4], // Thursday, Wednesday is closed
    ['open' => '16:00:00', 'weekday' => 5], // Friday opening time 2
    ['open' => '09:00:00', 'weekday' => 5], // Friday opening time 1
    ['open' => '09:00:00', 'weekday' => 6], // Saturday
    ['open' => '09:00:00', 'weekday' => 7], // Sunday
];

$special_opening_times = [
    ['date' => '2024-04-24', 'open' => '08:00:00'],
    ['date' => '2024-04-27', 'open' => '08:00:00'],
    ['date' => '2024-04-28', 'open' => '09:00:00'],
    ['date' => '2024-04-30', 'open' => '07:00:00'],
    ['date' => '2024-04-25', 'open' => '11:00:00']
];

echo getNextOpening($opening_times, $special_opening_times, '2024-04-25 10:30:00') . "\n";      // 2024-04-25 11:00:00
echo getNextOpening($opening_times, $special_opening_times, '2024-04-26 10:30:00') . "\n";      // 2024-04-26 16:00:00
echo getNextOpening($opening_times, $special_opening_times, '2024-04-24 07:30:00') . "\n";      // 2024-04-24 08:00:00
echo getNextOpening($opening_times, $special_opening_times, '2024-04-24 08:30:00') . "\n";      // 2024-04-25 11:00:00