: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
namespace Yoast\WP\SEO\Helpers;
* A helper object for terms.
* Taxonomy_Helper constructor.
* @codeCoverageIgnore It only sets dependencies.
* @param Options_Helper $options The options helper.
* @param String_Helper $string_helper The string helper.
public function __construct( Options_Helper $options, String_Helper $string_helper ) {
$this->options = $options;
$this->string = $string_helper;
* Checks if the requested term is indexable.
* @param string $taxonomy The taxonomy slug.
* @return bool True when taxonomy is set to index.
public function is_indexable( $taxonomy ) {
return ! $this->options->get( 'noindex-tax-' . $taxonomy, false );
* Returns an array with the public taxonomies.
* @param string $output The output type to use.
* @return string[]|WP_Taxonomy[] Array with all the public taxonomies.
* The type depends on the specified output variable.
public function get_public_taxonomies( $output = 'names' ) {
return \get_taxonomies( [ 'public' => true ], $output );
* Retrieves the term description (without tags).
* @param int $term_id Term ID.
* @return string Term description (without tags).
public function get_term_description( $term_id ) {
return $this->string->strip_all_tags( \term_description( $term_id ) );
* Retrieves the taxonomy term's meta values.
* @codeCoverageIgnore We have to write test when this method contains own code.
* @param WP_Term $term Term to get the meta value for.
* @return array|bool Array of all the meta data for the term.
* False if the term does not exist or the $meta provided is invalid.
public function get_term_meta( $term ) {
return WPSEO_Taxonomy_Meta::get_term_meta( $term, $term->taxonomy, null );
* Gets the passed taxonomy's slug.
* @param string $taxonomy The name of the taxonomy.
* @return string The slug for the taxonomy. Returns the taxonomy's name if no slug could be found.
public function get_taxonomy_slug( $taxonomy ) {
$taxonomy_object = \get_taxonomy( $taxonomy );
if ( $taxonomy_object && \property_exists( $taxonomy_object, 'rewrite' ) && \is_array( $taxonomy_object->rewrite ) && isset( $taxonomy_object->rewrite['slug'] ) ) {
return $taxonomy_object->rewrite['slug'];
return \strtolower( $taxonomy_object->name );
* Returns an array with the custom taxonomies.
* @param string $output The output type to use.
* @return string[]|WP_Taxonomy[] Array with all the custom taxonomies.
* The type depends on the specified output variable.
public function get_custom_taxonomies( $output = 'names' ) {
return \get_taxonomies( [ '_builtin' => false ], $output );
* Returns an array of taxonomies that are excluded from being indexed for the
* @return array The excluded taxonomies.
public function get_excluded_taxonomies_for_indexables() {
* Filter: 'wpseo_indexable_excluded_taxonomies' - Allow developers to prevent a certain taxonomy
* from being saved to the indexable table.
* @param array $excluded_taxonomies The currently excluded taxonomies.
$excluded_taxonomies = \apply_filters( 'wpseo_indexable_excluded_taxonomies', [] );
// Failsafe, to always make sure that `excluded_taxonomies` is an array.
if ( ! \is_array( $excluded_taxonomies ) ) {
return $excluded_taxonomies;
* Checks if the taxonomy is excluded.
* @param string $taxonomy The taxonomy to check.
* @return bool If the taxonomy is excluded.
public function is_excluded( $taxonomy ) {
return \in_array( $taxonomy, $this->get_excluded_taxonomies_for_indexables(), true );
* This builds a list of indexable taxonomies.
* @return array The indexable taxonomies.
public function get_indexable_taxonomies() {
$public_taxonomies = $this->get_public_taxonomies();
$excluded_taxonomies = $this->get_excluded_taxonomies_for_indexables();
// `array_values`, to make sure that the keys are reset.
return \array_values( \array_diff( $public_taxonomies, $excluded_taxonomies ) );
* Returns an array of complete taxonomy objects for all indexable taxonomies.
* @return array List of indexable indexables objects.
public function get_indexable_taxonomy_objects() {
$indexable_taxonomies = $this->get_indexable_taxonomies();
foreach ( $indexable_taxonomies as $taxonomy ) {
$taxonomy_object = \get_taxonomy( $taxonomy );
if ( ! empty( $taxonomy_object ) ) {
$taxonomy_objects[ $taxonomy ] = $taxonomy_object;
return $taxonomy_objects;
It is recommended that you Edit text format, this type of Fix handles quite a lot in one request
