How to add years elapsed since?

This is a great-use case for a snippet. I’ve created one and uploaded it to the Code Snippets Cloud website: https://codesnippets.cloud/snippet/shea/time-since-shortcode

Once you’ve added and activated it, you should be able to use it like so:

This company was founded [time_since date=”January 1st 2003″] ago.

To achieve the result:

This company was founded 20 years ago.

It should also adapt to shorter periods of time as well.

Thanks, that works great.

How do I remove the “years”? So it only outputs 20 and not 20 years ?

I prefer to control the text myself.

In that case, you can use this code instead:

add_shortcode( 'years_since', function ( $atts ) {
	$atts = shortcode_atts(
		[
			'date' => '',
		],
		$atts,
		'years_since'
	);

	$timestamp = strtotime( $atts['date'] );
	$diff = (int) abs( time() - $timestamp );
	$years = round( $diff / YEAR_IN_SECONDS );

	return $years > 0 ? $years : 1;
} );

Works the similar to [date_since], but will always only display the number of years as an integer (with no other text), e.g.

This company was founded [years_since date=”January 1st 2003″] years ago.