loop to generate the last ten mondays from today

Question

I'm trying to build a chart to show student progress, showing only the last handful of weeks (mondays) as m/d. Here is what I've tried:

$here = date( 'W', strtotime('this Monday'));
$then = date('W', strtotime('-70 days', strtotime('this Monday')));
    for($i = $then; $i<=$here; $i++)
    {
        $temp = date('W', strtotime($i));
        $tempa = strtotime($temp);
        $newd = date('m/d', $tempa);
        list .=",".$newd);
    }

this current iteration gives me a series of 01/01. Can someone help? Thanks.

Possible duplicate of [generating dates of previous seven days in php](https://stackoverflow.com/questions/2337968/generating-dates-of-previous-seven-days-in-php) — Andrei Lupuleasa, Apr 24 '19 at 09:18
Are you sure about that code? I've spotted at least two syntax errors — Nico Haase, Apr 24 '19 at 09:58

Pupil · Accepted Answer · 2019-04-24T09:56:58.160

4

You can use PHP's DateTime class.

<?php 
$nextMonday = new \DateTime(date('Y-m-d') . ' previous Monday');
echo "<br/>" . $nextMonday->format('Y-m-d');
for ($i=1 ; $i<=9 ; ++$i) {
 $nextMonday->sub(new DateInterval('P7D'));
 echo "<br/>" . $nextMonday->format('Y-m-d');
}

Output:

See it live here

Code Explained:

First get previous Monday.
Now, add loop for 1 to 9 (We already have recent Monday).
In the loop, subtract date by 7 days (P -> Period, 7D -> 7 Days)
By this, we can step over to only Mondays and (Monday to Monday) is 7 days difference.
It will print last 10 Mondays (1 before and 9 after the loop).

edited Apr 24 '19 at 09:56

answered Apr 24 '19 at 09:48

Pupil

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1

Fabulous. I tried other similar questions, but I couldn't get them to work quite right. Yours is customizable, so that others will be able to adopt it. – sukebe7 Apr 24 '19 at 10:24
1

oops, ....er....how do I reverse this order? It actually will be one big string, like "02-18,02-25,03-04,03-11,03-18,03-25" ..etc. – sukebe7 Apr 24 '19 at 12:07
Replace `$nextMonday->sub(new DateInterval('P7D'));` by `$nextMonday->add(new DateInterval('P7D'));` – Pupil Apr 24 '19 at 12:08

score 0 · Answer 2 · answered Apr 24 '19 at 09:22

0

$thisMonday = strtotime('this Monday');
$lastMonday = $thisMonday - 86400 * 7; //a day has 86400 seconds
$secondLastMonday = $thisMonday - 86400 * 14;

..... and so on!

answered Apr 24 '19 at 09:22

Kapsonfire

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loop to generate the last ten mondays from today

2 Answers2