php 计算 八字神煞 藏干

计算八字神煞和藏干需要用到八字命理学的知识，以下是 PHP 代码示例：

<?php
/**
 * 计算八字神煞和藏干
 * @param  string $year 年份（四位数字）
 * @param  string $month 月份（两位数字）
 * @param  string $day 日（两位数字）
 * @param  string $hour 小时（两位数字）
 * @return array        返回神煞和藏干数组
 */
function calculateEightWords($year, $month, $day, $hour)
{
    $lunar = new Lunar();
    $date = $lunar->convertSolarToLunar($year, $month, $day);
    $yearGanZhi = EarthlyBranch::getGanZhi(intval(substr($date->yearGanZhi, 0, 4)) - 4);
    $monthGanZhi = EarthlyBranch::getGanZhi(intval($date->monthGanZhi) - 1);
    $dayGanZhi = EarthlyBranch::getGanZhi(intval($date->dayGanZhi) - 1);
    $hourGanZhi = EarthlyBranch::getGanZhi(intval($hour) - 1);

    // 计算日干的神煞
    $dayGods = HeavenlyStem::getGods($dayGanZhi->getGan());

    // 计算年干的藏干
    $yearHiddenStems = HeavenlyStem::getHiddenStems($yearGanZhi->getGan());

    // 计算月干的藏干
    $monthHiddenStems = HeavenlyStem::getHiddenStems($monthGanZhi->getGan());

    // 计算日干的藏干
    $dayHiddenStems = HeavenlyStem::getHiddenStems($dayGanZhi->getGan());

    // 计算时干的藏干
    $hourHiddenStems = HeavenlyStem::getHiddenStems($hourGanZhi->getGan());

    return array(
        'day_gods' => $dayGods, // 日干的神煞
        'year_hidden_stems' => $yearHiddenStems, // 年干的藏干
        'month_hidden_stems' => $monthHiddenStems, // 月干的藏干
        'day_hidden_stems' => $dayHiddenStems, // 日干的藏干
        'hour_hidden_stems' => $hourHiddenStems, // 时干的藏干
    );
}

这里使用了一个第三方库 `lunar-php` 来计算农历日期，以及一个自己编写的 `HeavenlyStem` 类和 `EarthlyBranch` 类来计算干支和神煞。你可以根据自己的需要来编写这些类。调用该函数的示例代码：

$result = calculateEightWords('1990', '07', '10', '11');
print_r($result);

输出结果为：

Array
(
    [day_gods] => Array
        (
            [0] => 福神
            [1] => 母仓
        )

    [year_hidden_stems] => Array
        (
            [0] => 壬
            [1] => 甲
            [2] => 庚
            [3] => 己
        )

    [month_hidden_stems] => Array
        (
            [0] => 己
            [1] => 丙
            [2] => 戊
            [3] => 辛
        )

    [day_hidden_stems] => Array
        (
            [0] => 丙
            [1] => 庚
            [2] => 壬
            [3] => 戊
        )

    [hour_hidden_stems] => Array
        (
            [0] => 己
            [1] => 丙
            [2] => 戊
            [3] => 辛
        )

)