How to find month no,name from week number using php

How to find month no,name from w开发者_运维技巧eek number using php

If you have the ISO week number, then to get the month (of the start of the week) you can use strtotime like:

// F = full name of month, n = month number without leading zero
echo date('F n', strtotime('2010-W50'));

Bear in mind that the ISO week might not be the same as your meaning of week, so read on.

If you want to count the whole weeks since January 1^st of this year (regardless of what day of the week that is) then you could do as Adnan mentioned:

echo date('F n', strtotime('1 Jan + 50 weeks'));

echo date('F',strtotime('1 January 2010 +50 weeks'));

www.php.net/date
www.php.net/strtotime

Have a look at php date() - http://php.net/manual/en/function.date.php

Here are some good examples:

<?php
// set the default timezone to use. Available since PHP 5.1
date_default_timezone_set('UTC');

// Prints something like: Monday
echo date("l");

// Prints something like: Monday 8th of August 2005 03:12:46 PM
echo date('l jS \of F Y h:i:s A');

// Prints: July 1, 2000 is on a Saturday
echo "July 1, 2000 is on a " . date("l", mktime(0, 0, 0, 7, 1, 2000));

/* use the constants in the format parameter */
// prints something like: Mon, 15 Aug 2005 15:12:46 UTC
echo date(DATE_RFC822);

// prints something like: 2000-07-01T00:00:00+00:00
echo date(DATE_ATOM, mktime(0, 0, 0, 7, 1, 2000));
?>

$myDate = "2010-05-12";

$weekNumber = date("W", strtotime($myDate)); 

Just replace the "W" with the value you need. Full reference:

http://php.net/manual/en/function.date.php

If you have a week number, and want the date from it you can use:

date("d m Y", strtotime("1.1.2010 + 30 weeks"));