Calculating start and end dates of a week.
A friend asked "How do I calculate start (monday) and end (sunday) dates from a given week number for a specified year?" Instead of having to come up with your own algorithm you can simply do the following in PHP 5.1 and higher:
<?php
// Monday
echo date(
datetime::ISO8601,
strtotime("2006W37"));
// Sunday
echo date(
datetime::ISO8601,
strtotime("2006W377"));
?>
The format is " year 'W' weeknr ( daynr )?" where the default daynr is 1 being the Monday of that week. The daynr can be in the range 0 to 7. The weeknr is the ISO week number . Please note that the " year '-W' weeknr ( '-' daynr )?" format is only supported in PHP 5.2 and higher.
Comments
Thanks Derek, that is going to make life a lot easier!
Keep it simple and just do strtotime('-1 Sunday',$currentDay);
it is simpler and uses less resources.
or you could use PEAR::Date(), it makes it very easy as well
@Ammar: Why would you want to use a wrapper class in PHP when the extension supports it?
Hey Dereck
thanks for confirming yet again why I love the Internet... I've been playing around with this particular problem for the last few days... any solution I had was not nearly as elegant and simple as this... glad I found this posting...will help tremendously.
echo date("Y-m-d", strtotime(date("Y").'W'.date('W')."7"));
If 1 for daynr represents monday, what does 0 represent? How can it accept values 0-7?
Thnx! Just what I was looking for!
Thank you very much!
Excellent example of exactly what a lot of people need. Please keep this example up for the rest of the PHP newbs like me!
You have just saved me a lot of time on deadline day at work.
Thanks!
Thank you very much. This threat was my first search result: "php calculate start end week"..
Wow. I had no clue about this. Thanks, man!
Very very usefull, I knew about the W weeks implemented in recent php but this is pretty useful, saved me on a thing I have to do at work :)
Excellent...!
Exactly what I was looking for.
Even in 2013 this is very useful, thanks! Saved me much work
Thank you! I was getting very frustrated trying to get my dates to format properly, you're a lifesaver!
Life Line
What new fresh hell is this?
"Please click here and tick the box if you DO NOT want to be opted in."
And when you click on the non-visible link:
"[ ] I DO NOT want to be opted in."
@jamesholden Have you ever seen the Expanse? One of the main characters shares your name!
I walked 4.4km in 51m58s
I walked 8.2km in 1h40m07s
I walked 2.4km in 38m25s
@Edent With your ActivityPub implementation, have you figured out how to allow quote posts for your bot posts yet?
📷 Brown Cap in the Grass
🚩 Herikhuizerweg, Rheden, Nederland
I walked 0.9km in 11m17s
I walked 2.8km in 25m32s
I walked 4.6km in 1h8m02s
I hiked 23.0km in 4h10m15s
I walked 3.9km in 39m07s
After my PHP 8.5 in Leeds last night, it's now time to head to Rotterdam to give the same talk there tonight!
It's cold out here, but atleast the snow is now gone.
I walked 1.7km in 13m18s
📷 Avenue Gardens
🚩 Princess Road, London Borough of Brent, United Kingdom
#AutumnColours #FallColours #Photography
📷 Leafy Entrance
🚩 East Heath Road, London Borough of Camden, United Kingdom
#AutumnColours #FallColours #Photography
📷 From Green to Yellow.
🚩 St John's Wood Road, City of Westminster, United Kingdom
#AutumnColours #FallColours #Photography
I walked 9.1km in 1h56m24s
Shortlink
This article has a short URL available: https://drck.me/csaedoaw-4wr