Adding a Dynamic Date as a Wordpress Function - wordpress

Question

I want to add a shortcode function in my Wordpress site that shows the date one week from now, two weeks from now and 3 days from now. I'd like to be able to add the shortcode [addoneweek] on pages where I need them.
Here is the code that I have, but it isn't working. What am I doing wrong?
function addoneweek( $aow )
{
return(<?php $now = new DateTime();
echo $now->add(new DateInterval('P1W'))->format('m-d-Y');
?>)
}
add_shortcode( 'arttime', 'addoneweek');

Answer 1

Try below code in your current functions.php
add_shortcode('arttime', 'arttime');
function arttime() {
$Today = date('d:m:y');
// add 3 days to date
$html = Date('d:m:y', strtotime("+3 days")) . '<br/>';
// add 7 days to date
$html .= Date('d:m:y', strtotime("+7 days")) . '<br/>';
// add 14 days to date
$html .= Date('d:m:y', strtotime("+14 days")) . '<br/>';
return $html;
}

Answer 2

Firstly, I would suggest reading over the add_shortcode codex entry. It will explain how to use attributes/arguments.
Secondly, you are returning on your third line, which means that the echo on the fourth line is not going to run.
Thirdly, you also have a random opening <?php tag after your return, which you then try to close on your fifth line.
Fourth, and this is not really a big problem, but you should actually return your end result, instead of echo'ing it. echo will still output your request, but you're then essentially running an echo inside and echo when the shortcode runs.
This is what your function should look like:
function addoneweek()
{
$now = new DateTime();
return $now->add(new DateInterval('P1W'))->format('m-d-Y');
}
add_shortcode( 'arttime', 'addoneweek');