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

Typing math
I've added support for typesetting math using LaTeX on the forums.

Example:
Code: [Select]

include problem
I have my root folder as:
Code: $root = $_SERVER["SITE_HTMLROOT"]; // the server root<

How do I replace any number of character occurences with one occurrence?
How do I replace any number of character occurences with one occurrence?

Let's say I have:

single values into sql field
i have a form which i want the user to able to select multiple answers. But i want the answers to be

upgrade from 4.7 to ECC 6.0
Hi all,
we are going to do an upgrade from R/3 4.7 to ECC 6.0. I need to know if i can find som

How to ... (FAQs)
... get e-mail notifications As several people asked how to get e-mail notifications when new posti

Finding digits in variable containing text, and IDing them
$romanstock = "http://www.remoteprice.com/data.asp?storeid=123&itemcode=456&typ

php ajax - two drop down list with a submit button
i have created a form with 2 drop-down list and a submit button. I would like to know how to pass th

Count of reciepients in php mailer
How can i sent a mail to large no of reciepients say 10,00,00 Using PHP MAILER

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

When I send