PHP获取一年有几周以及每周开始日期和结束日期

最新推荐文章于 2022-07-11 10:50:55 发布

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最新推荐文章于 2022-07-11 10:50:55 发布

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CC 4.0 BY-SA版权

文章标签： php

原文链接：https://segmentfault.com/a/1190000010658916

本文提供了两种使用PHP来确定指定年份的总周数及特定周的起始和结束日期的方法。第一种方法通过计算时间戳来直接获取，第二种方法则通过设定ISO日期来间接计算。这两种方式都能有效地帮助开发者在PHP中处理日期与周相关的业务逻辑。

一年有多个周，每周的开始日期和结束日期

参考代码一：[正在使用的版本]

<?php
header("Content-type:text/html;charset=utf-8");
date_default_timezone_set("Asia/Shanghai");
$year = (int)$_GET['year'];
$week = (int)$_GET['week'];
$weeks = date("W", mktime(0, 0, 0, 12, 28, $year));

echo $year . '年一共有' . $weeks . '周
';

if ($week > $weeks || $week <= 0)
{

$week = 1;

}

if ($week < 10)
{

$week = '0' . $week; // 注意：一定要转为 2位数，否则计算出错

}
$timestamp['start'] = strtotime($year . 'W' . $week);
$timestamp['end'] = strtotime('+1 week -1 day', $timestamp['start']);

echo $year . '年第' . $week . '周开始时间戳：' . $timestamp['start'] . '
';
echo $year . '年第' . $week . '周结束时间戳：' . $timestamp['end'] . '
';
echo $year . '年第' . $week . '周开始日期：' . date("Y-m-d", $timestamp['start']) . '
';
echo $year . '年第' . $week . '周结束日期：' . date("Y-m-d", $timestamp['end']);
?>

参考代码二：[还没去验证]

<?php
header("Content-type:text/html;charset=utf-8");
function getIsoWeeksInYear($year)
{

$date = new DateTime;
$date->setISODate($year, 53);

return ($date->format("W") === "53" ? 53 : 52);

}

function weekday($custom_date)
{

$week_start = date('d-m-Y', strtotime('this week monday', $custom_date));
$week_end = date('d-m-Y', strtotime('this week sunday', $custom_date));
$week_array[0] = $week_start;
$week_array[1] = $week_end;

return $week_array;

}

echo ' Weeks in 2013' . getIsoWeeksInYear(2013);
$weekday = weekday(strtotime(date('d-m-Y', strtotime('5-8-2013'))));
echo ' 10-8-2013';
echo 'start: ' . $weekday[0];
echo 'end: ' . $weekday[1];
?>