PHP Gets the _php instance of a year with several weeks and a weekly start date and end date

Recently, one of the requirements was to use PHP to get a few weeks of a year and a weekly start date and contact date. Find some information on the Internet is not appropriate, so I made a copy, the following two ways to achieve PHP acquisition of a year has several weeks and the weekly start date and end date

Code One:

<?php
Header ("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,, $year));
Echo $year. ' A total of years '. $weeks. ' Zhou <br/> ';
if ($week > $weeks | | $week <= 0)
{
 $week = 1;
}
if ($week <)
{
 $week = ' 0 '. $week;
}
$timestamp [' start '] = Strtotime ($year. ' W '. $week);
$timestamp [' end '] = Strtotime (' +1 week-1 Day ', $timestamp [' Start ']);
Echo $year. ' Year of the first '. $week. ' Week start timestamp: '. $timestamp [' Start ']. ' <br/> ';
Echo $year. ' Year of the first '. $week. ' Week end timestamp: '. $timestamp [' End ']. ' <br/> ';
Echo $year. ' Year of the first '. $week. ' Week start date: '. Date ("y-m-d", $timestamp [' Start ']). ' <br/> ';
Echo $year. ' Year of the first '. $week. ' Week End Date: '. Date ("y-m-d", $timestamp [' End ']);
? >

Code two:

<?php
Header ("Content-type:text/html;charset=utf-8");
function Getisoweeksinyear ($year)
{
 $date = new DateTime;
 $date->setisodate ($year);
 Return ($date->format ("W") = = "53:52");
Function Weekday ($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 ' <br> Weeks in 2013<br> '. Getisoweeksinyear (2013);
$weekday = Weekday (Strtotime (' D-m-y ', strtotime (' 5-8-2013 ')));
Echo ' <br> 10-8-2013 ';
Echo ' <br>start: '. $weekday [0];
Echo ' <br>end: '. $weekday [1];
? >

The entire contents of this article, I hope that you learn PHP to get a year has several weeks and the weekly start date and end date, helpful.