php获取当月有多少天
文章描述：
php如何获取当前月有多少天
PHP获取当前月有多少天，首先获取当前日期，根据当前日期获取天数
<?php
$date=date('Y-m-d');
echo $date;
echo "<br>";
echo date("t",strtotime($date));
结果：
2023-08-02
31
php获取当前月的所有日期
echo "<pre>";
print_r(getMonthDays());
/**
* 获取当前月的所有日期
* @return array
*/
function getMonthDays()
{
$monthDays = [];
$firstDay = date('Y-m-01', time());
$i = 0;
$lastDay = date('Y-m-d', strtotime("$firstDay +1 month -1 day"));
while (date('Y-m-d', strtotime("$firstDay +$i days")) <= $lastDay) {
$monthDays[] = date('Y-m-d', strtotime("$firstDay +$i days"));
$i++;
}
return $monthDays;
}结果：
Array
(
[0] => 2023-08-01
[1] => 2023-08-02
[2] => 2023-08-03
[3] => 2023-08-04
[4] => 2023-08-05
[5] => 2023-08-06
[6] => 2023-08-07
[7] => 2023-08-08
[8] => 2023-08-09
[9] => 2023-08-10
[10] => 2023-08-11
[11] => 2023-08-12
[12] => 2023-08-13
[13] => 2023-08-14
[14] => 2023-08-15
[15] => 2023-08-16
[16] => 2023-08-17
[17] => 2023-08-18
[18] => 2023-08-19
[19] => 2023-08-20
[20] => 2023-08-21
[21] => 2023-08-22
[22] => 2023-08-23
[23] => 2023-08-24
[24] => 2023-08-25
[25] => 2023-08-26
[26] => 2023-08-27
[27] => 2023-08-28
[28] => 2023-08-29
[29] => 2023-08-30
[30] => 2023-08-31
)
PHP获取当前月及前几个月
echo date("m - Y")."<br>";
echo date("m - Y",strtotime("-1 Months"))."<br>";
echo date("m - Y",strtotime("-2 Months"))."<br>";
echo date("m - Y",strtotime("-3 Months"))."<br>";08 – 2023
07 – 2023
06 – 2023
05 – 2023
上个月第一天
echo date("Y-m-d",strtotime("$firstday -1 month -1 day"));
上个月和下个月
$date = '2023-08-09';
echo date("Y-m-d",strtotime("$date -1 month -1 day"));
echo date("Y-m-d",strtotime("$date +1 month -1 day"));
2023-07-08
2023-09-08
发布时间：2023/08/02
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