HP calculates the number of weeks of a year, and returns the start time and end time of a week (optional, return the timestamp or date)

HP calculates the number of weeks of a year, and returns the start time and end time of a week (optional, return the timestamp or date)

Function getWeekStartAndEnd ($ year, $ week = 1 ){ Header ("Content-type: text/html; charset = utf-8 "); Date_default_timezone_set ("Asia/Shanghai "); $ Year = (int) $ year; $ Week = (int) $ week; // Calculate the total number of weeks of the current year based on the given year $ Date = new DateTime; $ Date-> setISODate ($ year, 53 ); $ Weeks = max ($ date-> format ("W"), 52 ); // If the specified number of weeks is greater than the total number of weeks or less than or equal to 0 If ($ week> $ weeks | $ week <= 0 ){ Return false; } // If the number of weeks is less than 10 If ($ week <10 ){ $ Week = '0'. $ week; } // The start and end timestamp of the week $ Timestamp ['start'] = strtotime ($ year. 'W'. $ week ); $ Timestamp ['end'] = strtotime ('+ 1 week-1 Day', $ timestamp ['start']); // Start and end dates of the week $ Timeymd ['start'] = date ("Y-m-d", $ timestamp ['start']); $ Timeymd ['end'] = date ("Y-m-d", $ timestamp ['end']); // Returns the start timestamp. Return $ timestamp; // Return Date format // Return $ timeymd; }

(Optional) number of instances in a week