PHP easter_date() 函数

easter_date(int $year = null, int $mode = CAL_EASTER_DEFAULT): int

// 获取当前年份的复活节日期
$easter_timestamp = easter_date();
$easter_date = date('Y-m-d', $easter_timestamp);
echo "今年复活节日期: " . $easter_date;

今年复活节日期: 2024-03-31

// 获取2025年的复活节日期
$year = 2025;
$easter_timestamp = easter_date($year);
$easter_date = date('Y年m月d日', $easter_timestamp);
echo "{$year}年复活节日期: " . $easter_date;

2025年复活节日期: 2025年04月20日

// 计算复活节相关的其他重要日期
$year = 2024;
$easter_timestamp = easter_date($year);

// 复活节前40天（四旬期开始）
$ash_wednesday = $easter_timestamp - (40 * 24 * 60 * 60);
// 复活节前7天（棕枝主日）
$palm_sunday = $easter_timestamp - (7 * 24 * 60 * 60);
// 复活节后39天（耶稣升天节）
$ascension = $easter_timestamp + (39 * 24 * 60 * 60);
// 复活节后49天（圣灵降临节）
$pentecost = $easter_timestamp + (49 * 24 * 60 * 60);

echo "{$year}年相关节日日期:\n";
echo "复活节: " . date('Y-m-d', $easter_timestamp) . "\n";
echo "四旬期开始: " . date('Y-m-d', $ash_wednesday) . "\n";
echo "棕枝主日: " . date('Y-m-d', $palm_sunday) . "\n";
echo "耶稣升天节: " . date('Y-m-d', $ascension) . "\n";
echo "圣灵降临节: " . date('Y-m-d', $pentecost);

2024年相关节日日期:
复活节: 2024-03-31
四旬期开始: 2024-02-21
棕枝主日: 2024-03-24
耶稣升天节: 2024-05-09
圣灵降临节: 2024-05-19

// 比较不同计算模式的结果
$year = 2024;

$default = date('Y-m-d', easter_date($year, CAL_EASTER_DEFAULT));
$roman = date('Y-m-d', easter_date($year, CAL_EASTER_ROMAN));
$gregorian = date('Y-m-d', easter_date($year, CAL_EASTER_ALWAYS_GREGORIAN));
$julian = date('Y-m-d', easter_date($year, CAL_EASTER_ALWAYS_JULIAN));

echo "{$year}年复活节日期（不同计算模式）:\n";
echo "默认模式: {$default}\n";
echo "罗马模式: {$roman}\n";
echo "公历模式: {$gregorian}\n";
echo "儒略历模式: {$julian}";

2024年复活节日期（不同计算模式）:
默认模式: 2024-03-31
罗马模式: 2024-03-31
公历模式: 2024-03-31
儒略历模式: 2024-05-05

// 生成未来几年的复活节日期列表
echo "未来5年复活节日期:\n";
for ($i = 0; $i < 5; $i++) {
    $year = date('Y') + $i;
    $easter_timestamp = easter_date($year);
    $easter_date = date('Y-m-d (l)', $easter_timestamp);
    echo "{$year}: {$easter_date}\n";
}

未来5年复活节日期:
2024: 2024-03-31 (Sunday)
2025: 2025-04-20 (Sunday)
2026: 2026-04-05 (Sunday)
2027: 2027-03-28 (Sunday)
2028: 2028-04-16 (Sunday)