Filter Pay with a Like URL to use 'shorturl' post meta

gistfile1.txt

function my_filter_pwal_url_to_like( $url_to_like ) {

  // Try to determine the post_id from the URL. Does not always work
	$post_id = url_to_postid( $url_to_like );
	
	// IF we find a match then use the post_id to look up the post meta key 'shorturl'
	if (intval($post_id) > 0) {
		$shorturl = get_post_meta($post_id, 'shorturl', true);
		if (!empty($shorturl)) 
			return $shorturl;		
	}
	return $url_to_like;
}
add_filter( 'pwal_url_to_like', 'my_filter_pwal_url_to_like');