features = $features;
}
public function register(): void
{
// Both filters only ever run inside feed requests.
add_filter( 'the_content_feed', array( $this, 'append_backlink' ) );
add_filter( 'the_excerpt_rss', array( $this, 'append_backlink' ) );
}
public function append_backlink( string $content ): string
{
if ( ! $this->features->enabled( 'rss_backlink' ) )
{
return $content;
}
$post = get_post();
if ( ! $post instanceof \WP_Post )
{
return $content;
}
$sentence = sprintf(
/* translators: 1: post permalink, 2: post title, 3: home URL, 4: site name */
__( 'The post %2$s first appeared on %4$s.', 'acez-seo' ),
esc_url( (string) get_permalink( $post ) ),
esc_html( get_the_title( $post ) ),
esc_url( home_url( '/' ) ),
esc_html( get_bloginfo( 'name' ) )
);
return $content . "\n" . '' . $sentence . '
';
}
}