如何不使用自带的公式自己造轮子获取一周的星期几呢,可以使用吉姆拉森日期计算公式。
public function __construct() { $this->weeks = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]; } /** * 基姆拉尔森日期公式 * @param int $day * @param int $month * @param int $year * @return mixed */ public function solution(int $day, int $month, int $year) { return $this->weeks[($day + 2*$month + 3*($month+1)/5 + $year + $year/4 - $year/100 + $year/400) % 7]; }
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