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

DELETE rows based on content
I have a link in my rows

$bit="http://bit.ly/abcd";
$query = mysql_query("D

Multidimensional $_POST
Hello

How to get a single array from array of array (2 - dimension).
For example I have a

Best PHP Documentation generator
Hello guys!

I would like to hear from you what is the best PHP documentation generator. Perso

SOAP Issue
Hi,

I am facing some understanding problem with SOAP basic.kindly recommend some SOAP expert.

header redirect problems? please help
Ok i am making a site that generates youtube thumbnails and i am generating an image that displays 1

Parse String
I need to parse the string below into three variables. How would I do that?

john + 10/20/2008

filesize() returns 0
I have a socket program that runs in an infinite loop, listening for connections, in this socket I h

Getting Subdomain Name With PHP?
I want to grab the subdomain name with PHP so I can generate database queries.

for example my

Dynamic Array using glob?
Is there an easier way to do this?

I am trying to get create a dyamic array based on files wi

Find occurences of unicode characters in string
I need to prohibit filenames with everything but English characters and numbers but regexp and strin