php Get the first and last day of a specified month_PHP tutorial

This article will introduce to you how to use date and strtotime functions in PHP to obtain the first day of the user-given time or the last day of the article. Friends who need to learn more can enter for reference.

With the help of date and strtotime functions, you can easily obtain the first and last days of this month, next month and previous month. The implementations are given below. The parameter date format of the function is yyyy-MM-dd.

1. Given a date, get the first and last day of this month

The code is as follows

代码如下	复制代码
function getCurMonthFirstDay($date) {     return date('Y-m-01', strtotime($date)); } function getCurMonthLastDay($date) {     return date('Y-m-d', strtotime(date('Y-m-01', strtotime($date)) . ' +1 month -1 day')); }

Copy code

代码如下	复制代码
function getNextMonthFirstDay($date) {     return date('Y-m-d', strtotime(date('Y-m-01', strtotime($date)) . ' +1 month')); } function getNextMonthLastDay($date) {     return date('Y-m-d', strtotime(date('Y-m-01', strtotime($date)) . ' +2 month -1 day')); }

function getCurMonthFirstDay($date) {

Return date('Y-m-01', strtotime($date));

}

代码如下	复制代码
function getPrevMonthFirstDay($date) {     return date('Y-m-d', strtotime(date('Y-m-01', strtotime($date)) . ' -1 month')); } function getPrevMonthLastDay($date) {     return date('Y-m-d', strtotime(date('Y-m-01', strtotime($date)) . ' -1 day')); }

function getCurMonthLastDay($date) {

Return date('Y-m-d', strtotime(date('Y-m-01', strtotime($date)) . ' +1 month -1 day'));

}

2. Given a date, get the first and last day of the next month

The code is as follows	Copy code

function getNextMonthFirstDay($date) { Return date('Y-m-d', strtotime(date('Y-m-01', strtotime($date)) . ' +1 month'));

}

function getNextMonthLastDay($date) { Return date('Y-m-d', strtotime(date('Y-m-01', strtotime($date)) . ' +2 month -1 day')); } 3. Given a date, get the first and last day of the next month

The code is as follows

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function getPrevMonthFirstDay($date) { Return date('Y-m-d', strtotime(date('Y-m-01', strtotime($date)) . ' -1 month')); } function getPrevMonthLastDay($date) { Return date('Y-m-d', strtotime(date('Y-m-01', strtotime($date)) . ' -1 day')); } The strtotime function parameter "+1 month", PHP will determine how many days to add according to the specific month, which may be 28, 29 (February), 30 (small month) or 31 (big month); the first day of a certain month One day "-1 day" is naturally the last day of the last month. PHP will also intelligently determine whether it is 28, 29, 30 or 31 according to the month. strtotime — Parse any English text datetime description into a Unix timestamp Report a bug Description int strtotime ( string $time [, int $now = time() ] ) This function expects a string containing a date in US English format and attempts to parse it into a Unix timestamp (number of seconds since January 1 1970 00:00:00 GMT) relative to the time given by the now parameter, If this parameter is not provided, the current system time is used. http://www.bkjia.com/PHPjc/631520.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631520.htmlTechArticleThis article introduces how to use date and strtotime functions in php to get the first day or article of a given time by the user On the last day, friends who need to learn more can enter for reference. With the help of d...