PHP obtains the number of weeks in a year and the start and end dates of each week.

This article mainly introduces how many weeks php calculates in a year, and obtains the start and end dates of each week. If you need them, refer to them.

This article mainly introduces how many weeks php calculates in a year, and obtains the start and end dates of each week. If you need them, refer to them.

Recently, I took over a project. One of the requirements was to use php to obtain the weeks of the year, the start date of the week, and the contact date. I did not find the appropriate information on the Internet, so I made a copy of it myself. Below I will use two methods to obtain the number of weeks of the year in PHP, as well as the start date and end date of the week.

Code 1:

<? Phpheader ("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. 'years in total '. $ weeks. 'Week
'; If ($ week> $ weeks | $ week <= 0) {$ week = 1;} if ($ week <10) {$ week = '0 '. $ week;} $ timestamp ['start'] = strtotime ($ year. 'W '. $ week); $ timestamp ['end'] = strtotime ('+ 1 week-1 Day', $ timestamp ['start']); echo $ year. 'Year '. $ week. 'Week start timestamp :'. $ timestamp ['start'].'
'; Echo $ year. 'Year'. $ week. 'Week end timestamp:'. $ timestamp ['end'].'
'; Echo $ year. 'Year '. $ week. 'Week start date :'. date ("Y-m-d", $ timestamp ['start']).'
'; Echo $ year. 'Year '. $ week. 'Week end date :'. date ("Y-m-d", $ timestamp ['end']);?>

Code 2:

<? Phpheader ("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];?>

All of the above content will be helpful for you to learn how many weeks of the year, weekly start date, and end date for PHP.