post_content, $match ) ) { $tags = implode( ', ', $match[2] ); wp_add_post_tags( $data->post_parent, $tags ); } return $id; } /** * Filter to replace the #tags in the content with links * * @param string $the_content the post-content */ public static function the_content( $the_content ) { $the_content = preg_replace_callback( '/' . ACTIVITYPUB_HASHTAGS_REGEXP . '/i', array( 'Activitypub_Hashtag', 'replace_with_links' ), $the_content ); return $the_content; } /** * A callback for preg_replace to build the term links * * @param array $result the preg_match results * @return string the final string */ public static function replace_with_links( $result ) { $tag = $result[2]; $space = $result[1]; $tag_object = get_term_by( 'name', $result[2], 'post_tag' ); if ( $tag_object ) { $link = get_term_link( $tag_object, 'post_tag' ); return "$space#$tag"; } return $space . '#' . $tag; } }