David Gewirtz

adiant

This plugin provides the <code>[iagc]</code> shortcode, which can be inserted on a WordPress Page or Post to display the official Copyright notice, a C with a circle around it (“©”) required legally in many countries to protect (“copyright”) many forms of intellectual property.
The <code>[iagy]</code> shortcode displays the current year. To display the Copyright symbol followed by the current year, use the <code>[iagcy]</code> shortcode.
Although not required in a Copyright notice, the <code>[iagm]</code> shortcode displays the name of the current month and the <code>[iagd]</code> shortcode displays the current day of the month.
Note that the day, month and year are truly Current, accurate to the moment the Page or Post is displayed, based on the Timezone set in WordPress General Settings.
To provide compatibility with previous Versions of this plugin, the <code>[c]</code>, <code>[y]</code>, <code>[cy]</code>, <code>[m]</code> and <code>[d]</code> shortcodes will still work, but one or more of them will be disabled if any other activated plugin or theme defines the same shortcode, so as not to interfere with that other plugin or theme.
<a href="https://installactivatego.com/copyright-shortcodes/" title="InstallActivateGo.com Copyright Current Date Shortcodes" rel="nofollow ugc">Click here</a> for examples of the shortcodes and an explanation of their use to create valid U.S.A. Copyright Notices.

InstallActivateGo Copyright Current Date Shortcodes

Provides Shortcodes to display the Copyright symbol and Current Year, Month and Day.

waughjai

Adds copyright year or interval o’ years where desired. By default, it just shows the current year, as specified by the server ( which is hopefully keeping accurate track o’ time ). Optionally, you can include a start year. If the start year is different from the current year, then it will show an interval ‘tween the start year & current year.
For instance, if you set the start year to 2015, in 2018 you will get the following:
<pre><code>2015 - 2018
</code></pre>
You can also set a custom divider if you want the interval sign to look different. For instance, if you don’t want the hyphen to have spaces round it, you could set the divider to “-“, & you will get the following:
<pre><code>2015-2018
</code></pre>
<h3>Example</h3>
<pre><code><?php

declare( strict_types = 1 );
namespace MyTheme\FooterTemplate
{
 use \WaughJ\CopyrightYear\CopyrightYear;

 ?>
 <footer class="footer">
 Copyright Jaimeson Waugh &copy; <?= new CopyrightYear( 2015, '-' ); ?>.
 </footer>
 <?php
}
</code></pre>
or
<pre><code>[copyright-year start="2015" divider="-"]
</code></pre>
This will print the message, <code>Copyright Jaimeson Waugh © 2015-2018.</code>

WAJ Copyright Year

Simple class for handling auto-updating copyright year in website footers.

InstallActivateGo Copyright Current Date Shortcodes vs WAJ Copyright Year