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

Inserting Data into a MS Access DB using PHP.
As part of my uni course I am doing a placement at a company whom want me to create a client zone fo

add to sql result
ok see rite now my sites hit counter is counted from the mysql visitor log i need to clear it aft

Checking BOM Authorization Group
Hai Friends,

I have developed a mulitilevel BOM display report. End users have been assig

Need help PLEASE
ok i have this warning showing up

Warning: in_array() [function.in-array]: Wrong datatype for

Month String to Numeric?
Hi guys,

Given a month as a string, is there a simple way to find the numeric representation

Firewall / visited websites logger
Hi. I have a firewall implementation and I want to log all the websites visited on the machine. S

Most basic form question ever?
Hello,

I want to use this snippet to make sure the fields in a form are ok before processing

PHP doesn't send my mail
Hi all, I found this and used it to send mail. Simple contact form with some required fields. The va

Backflush
I am looking for a report in SAP that would give me a list of all parts that are populated with a ba

isset undefined variable
Hi all,

Hope someone can point out the obvious. I've a log in script, if you dont enter a use