weeks in a year

Posted on 16th Feb 2014 07:03 pm by admin

hi,

i found this snippet on php.net
QuoteFor the week number for weeks starting on Sunday:

<?php
function week_of_year($month, $day, $year) {

$day_of_year = date('z', mktime(0, 0, 0, $month, $day, $year));

/* Days in the week before Jan 1. If you want weeks to start on Monday make this (x + 6) % 7 */
$days_before_year = date('w', mktime(0, 0, 0, 1, 1, $year));

$days_left_in_week = 7 - date('w', mktime(0, 0, 0, $month, $day, $year));

/* find the number of weeks by adding the days in the week before the start of the year, days up to $day, and the days left in this week, then divide by 7 */
return ($days_before_year + $day_of_year + $days_left_in_week) / 7;

}
?>


so if i go : week_of_year(1, 3, 2010) (sunday)

the week shows as 1, because the script is set to begin new week on sunday,

however i am confused by his instruction " (x + 6) % 7 " to have the week start on a monday

what part of the script do i apply this equation ???

thanks

Your Answer:

Login to answer

Other forums

Consuming MII WebService in Java WebDynpro
Hello,

We are facing a strange situation...

We define a transaction in MII to

Structure Question - One Table or One Table Per Record Set?
I have a web app (mySQL and PHP) which allows people to create an item with up to 200 records which

DATEDIFF Question
First time post, and of course it is a help question.

I am using a WP plug-in to display prev

Number Format
Hi All,

I have number '000000000050085' I want to format it to 500.85 Can any one give me

Spaghetti Code
So.

I've pretty much reached the point where I have so many isset s on one page that I can't

PHP error on MySQL insert
I'm sure it's the simplest of issues, but I can't recall why this isn't working.

Code: [Selec

Simple PHP/Java Help..
Hi,
I'm trying to build a little program to do with calculating postage. Unfortunately i haven't

Warehouse Management
Hi,

On our system, we have two storage locations ( A and B ) where A is the main factory

Help with some dates
I have a list of dates in an array:

$mondays = array(
strtotime("October 12, 2009

Setting/Modify Headers using mail() function
I have a question about setting email headers when using mail() in a php script.

When I send