php获取日期是当月第几周的方法:首先创建一个PHP示例文件;然后通过“date(‘d’, $time)-(8 – $wk_day);echo $day<=0 ? 1:ceil($day / 7)+1;”获取当天是本月第几周。

php怎么获取日期是当月第几周插图

本文操作环境:windows7系统、PHP7.1版,DELL G3电脑

php怎么获取日期是当月第几周?

PHP获取日期在月份里属于第几周,最简单的获取当天是本月第几周

<?php
$time = strtotime('2019-01-01');
$wk_day = date('w', strtotime(date('Y-m-1 00:00:00', $time))) ? : 7; //今天周几
$day = date('d', $time) - (8 - $wk_day); //今天几号
echo $day <= 0 ? 1 : ceil($day / 7) + 1; //计算是第几个星期
print_r(week_of_month(strtotime('2019-01-1')));
function week_of_month($time, $offset = 1){
$week = get_week_block($time);
$wk_day = date('w', strtotime(date('Y-m-1 00:00:00', $time))) ? : 7; //今天周几
$day = date('d', $time) - (8 - $wk_day); //今天几号
$weekof = $day <= 0 ? 1 : ceil($day / 7) + 1; //计算是第几个星期
if($offset){
$week[0] = date('Y-m-d', max(strtotime(date('Y-m-1 00:00:00', $time)), $week[0]));
$week[1] = date('Y-m-d', min(strtotime(date('Y-m-'.date('t', $time).' 23:59:59', $time)), $week[1]));
}else{
$week[0] = date('Y-m-d', $week[0]);
$week[1] = date('Y-m-d', $week[1]);
}
return ['week' => $week, 'weekof' => $weekof];
}
function get_week_block($sdefaultDate = false, $first = 1){
//当前日期
//$first =1 表示每周星期一为开始日期 0表示每周日为开始日期
if(!$sdefaultDate)$sdefaultDate = time();
if(is_numeric($sdefaultDate))$sdefaultDate = date('Y-m-d', $sdefaultDate);
//获取当前周的第几天 周日是 0 周一到周六是 1 - 6
$w=date('w', strtotime($sdefaultDate));
//获取本周开始日期,如果$w是0,则表示周日,减去 6 天
$week_start=date('Y-m-d',strtotime("$sdefaultDate -".($w ? $w - $first : 6).' days'));
//本周结束日期
$week_end=date('Y-m-d',strtotime("$week_start +6 days"));
return array(strtotime($week_start.' 00:00:00'), strtotime($week_end.' 23:59:59'));
}

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