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
Robin
They usually never sit still long enough close by for a good photo. But this little bird was perched on this branch for several minutes letting lots of people take photos of it. When I started taking photos, it looked directly at me and my camera — it was clearly posing!
#Birds #BirdPhotography #Aves #BirdsOfMastodon #Photography
I hiked 16.2km in 3h23m19s
Updated a restaurant
Updated a restaurant
I walked 8.7km in 1h25m51s
Merged pull request #1056
Add metadata header to CSV file
RE: https://phpc.social/@Tideways/115859809842500892
Generate summary using PHP and generate summary.csv file
Created a fast_food
I walked 5.8km in 1h15m00s
I walked 1.1km in 10m08s
Merged pull request #1055
Fixed issue #2387: Remove INI entries for changed and removed Xdebug …
Merged pull request #1053
Reimplement PR #1052 with normal style
Add missing section comment
I walked 6.1km in 1h16m01s
Merge branch 'xdebug_3_5'
Merged pull request #1054
Change error retrieval method in ctrl_socket.c
Pink Sky at Sunset
I took this photo over the Christmas period in the Dutch city of Breda.
I walked 8.5km in 1h25m28s
I walked 8.1km in 1h21m10s
I walked 0.8km in 9m03s
Shortlink
This article has a short URL available: https://drck.me/csaedoaw-4wr