WordPress Version: 5.4
/**
* Get boundary post relational link.
*
* Can either be start or end post relational link.
*
* @since 2.8.0
* @deprecated 3.3.0
*
* @param string $title Optional. Link title format.
* @param bool $in_same_cat Optional. Whether link should be in a same category.
* @param string $excluded_categories Optional. Excluded categories IDs.
* @param bool $start Optional, default is true. Whether to display link to first or last post.
* @return string
*/
function get_boundary_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '', $start = true)
{
_deprecated_function(__FUNCTION__, '3.3.0');
$posts = get_boundary_post($in_same_cat, $excluded_categories, $start);
// If there is no post, stop.
if (empty($posts)) {
return;
}
// Even though we limited get_posts() to return only 1 item it still returns an array of objects.
$post = $posts[0];
if (empty($post->post_title)) {
$post->post_title = $start ? __('First Post') : __('Last Post');
}
$date = mysql2date(get_option('date_format'), $post->post_date);
$title = str_replace('%title', $post->post_title, $title);
$title = str_replace('%date', $date, $title);
$title = apply_filters('the_title', $title, $post->ID);
$link = $start ? "<link rel='start' title='" : "<link rel='end' title='";
$link .= esc_attr($title);
$link .= "' href='" . get_permalink($post) . "' />\n";
$boundary = $start ? 'start' : 'end';
return apply_filters("{$boundary}_post_rel_link", $link);
}