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

Search with relational database
Hey,

I have quite a complicated (for me anyway ) relational database for an apartments syste

[newb] Image hosting help.
Hey there, I'm new to php, I know some basics and i can code PWN, I'm only 14 but I'm interested in

CODE NOT WORKING
Code: [Select]<?php
//include shared codes

include '../lib/common.php';
include

IP Logger for Voting Script
Can anybody help me place an IP logger into my voting script?
I know that maybe it is not as secu

User registration and login
I don't know whether this is the correct forum, if not i apologise but am pretty desperate at the mo

Upload file!
Ok i have a form..
Code: <form name="form1" method="post" action=&quo

Taking an HTML form and a PHP program and making it into one working file.
Hello,

So I would like to display everything INSIDE a specific directory. In other words, I

timezone change with date()
so i put all my times for posts in my made from scratch forum(not phpbb3 or sm)
in my mysql db u

Sendmail.php - heading error following check_input
Hi,

I would greatly appreciate some help? I am brand new to PHP and have been searching and e

PHP File Upload Problem
Hi, I have written a very simple file upload script but it fails for reasons I can't explain. Hope