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

Check Digits and extracting digits
I think I can figure out the code for this but I am having a very hard time getting past the first s

How to Handle more than one submit button in single form?
Hi
I have one PHP file which contains one Form. In this form there are two Submit type Buttons

Seperate team from score
I am writing a site that does a NFL Pick 'em type application and I have a feed that gives me the sc

Hyperlink is adding an extra gap to variable
Hi, here's my problem..

I have a php generated page with a hyperlink which opens in a new win

Issue Parsing XML into table
Hello all,

Im a bit new to php and new to phpfreaks. But thanks in advance for the help!
<

modifying query string with no page refresh
Hi everybody,
I've tried to get info about my problem all over the internet but i didn't find out

Get last modified date of web page
Hai All,

In php how can i get last modified date of a give web page . I have tried to g

Easy administration on MySQL databases
My website is database driven and I am very tired of manually making queries to my tables in order t

form help
this doesn't work. i want the form action to go the location.href of the submit button chosen.. how

IIS & NW MII on the same server
Hi,

We're weighing the possibility to run both IIS and MII (NetWeaver) on the same server