How to get time in php

This article introduces the method of obtaining time in php

$year = date("Y");// 年 2018 如果“Y” 小写，输出是年份简写，如：2018年，输出是：18
$month =date("m");// 月 2 如果“M” 大写，输出是英文月份，小写是数字
$day =date("d");// 日$week =date("l");// 星期几
$last_month_days = cal_days_in_month(CAL_GREGORIAN, $month-1,$year);// 上一月的天数 $month = date("m")
$now_month_days = cal_days_in_month(CAL_GREGORIAN, $month,$year);// 当年月的天数； $month = date("m")
cal_days_in_month 的公用:返回某个历法中某年中某月的天数
$next_month_days=cal_days_in_month(CAL_GREGORIAN,$month+1,$year);
if($year%4==0 && $now_month_days==28){
$now_month_days = $now_month_days+1;// 判断当前月是不闰年，是的话 2月加一天，即29天
}
$week_date = date("w",strtotime("2018-2-5")); // 字符串指定日期获得星期几
$week_date = date("w",strtotime(date("Y-m-d))); // 变量指定日期获得星期几
$week_date = date("w",strtotime($year."-".$month."-"."1"));//拼接字符串指定每月 1 号期，获得星期几   
cal_days_in_month 的公用:返回某个历法中某年中某月的天数

Parameter introduction:

cal_days_in_month(par1,par2,$par3);

$par1: used for calculation A certain calendar, PHP Calendar constant

par2: Parameter par1 selects a certain month in the calendar

$par3: Selects a certain year in the calendar

Return value:

$par1 The number of days in a certain year and month of the selected calendar

PHP Calendar constants: The calendar extension contains functions that simplify conversion between different calendar formats.

In order for these functions to work, you must compile PHP with –enable-calendar. Under window, support for calendar extension has been integrated.

The constant CAL_GREGORIAN in the case is a PHP predefined constant, just like constants such as PHP_OS.

gregorian means: Gregorian calendar; Gregorian calendar

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