: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
namespace Yoast\WP\SEO\Actions\Indexing;
use Yoast\WP\SEO\Helpers\Post_Helper;
use Yoast\WP\SEO\Helpers\Post_Type_Helper;
use Yoast\WP\SEO\Models\Indexable;
use Yoast\WP\SEO\Repositories\Indexable_Repository;
use Yoast\WP\SEO\Values\Indexables\Indexable_Builder_Versions;
* Reindexing action for post indexables.
class Indexable_Post_Indexation_Action extends Abstract_Indexing_Action {
* The transient cache key.
public const UNINDEXED_COUNT_TRANSIENT = 'wpseo_total_unindexed_posts';
* The transient cache key for limited counts.
public const UNINDEXED_LIMITED_COUNT_TRANSIENT = self::UNINDEXED_COUNT_TRANSIENT . '_limited';
protected $post_type_helper;
* The indexable repository.
* @var Indexable_Repository
* The WordPress database instance.
* The latest version of Post Indexables.
* Indexable_Post_Indexing_Action constructor
* @param Post_Type_Helper $post_type_helper The post type helper.
* @param Indexable_Repository $repository The indexable repository.
* @param wpdb $wpdb The WordPress database instance.
* @param Indexable_Builder_Versions $builder_versions The latest versions for each Indexable type.
* @param Post_Helper $post_helper The post helper.
public function __construct(
Post_Type_Helper $post_type_helper,
Indexable_Repository $repository,
Indexable_Builder_Versions $builder_versions,
$this->post_type_helper = $post_type_helper;
$this->repository = $repository;
$this->version = $builder_versions->get_latest_version_for_type( 'post' );
$this->post_helper = $post_helper;
* Creates indexables for unindexed posts.
* @return Indexable[] The created indexables.
public function index() {
$query = $this->get_select_query( $this->get_limit() );
// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Function get_select_query returns a prepared query.
$post_ids = $this->wpdb->get_col( $query );
foreach ( $post_ids as $post_id ) {
$indexables[] = $this->repository->find_by_id_and_type( (int) $post_id, 'post' );
if ( \count( $indexables ) > 0 ) {
\delete_transient( static::UNINDEXED_COUNT_TRANSIENT );
\delete_transient( static::UNINDEXED_LIMITED_COUNT_TRANSIENT );
* Returns the number of posts that will be indexed in a single indexing pass.
public function get_limit() {
* Filter 'wpseo_post_indexation_limit' - Allow filtering the amount of posts indexed during each indexing pass.
* @param int $limit The maximum number of posts indexed.
$limit = \apply_filters( 'wpseo_post_indexation_limit', 25 );
if ( ! \is_int( $limit ) || $limit < 1 ) {
* Builds a query for counting the number of unindexed posts.
* @return string The prepared query string.
protected function get_count_query() {
$indexable_table = Model::get_table_name( 'Indexable' );
$post_types = $this->post_type_helper->get_indexable_post_types();
$excluded_post_statuses = $this->post_helper->get_excluded_post_statuses();
$replacements = \array_merge(
$replacements[] = $this->version;
// Warning: If this query is changed, makes sure to update the query in get_select_query as well.
// @phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
return $this->wpdb->prepare(
FROM {$this->wpdb->posts} AS P
WHERE P.post_type IN (" . \implode( ', ', \array_fill( 0, \count( $post_types ), '%s' ) ) . ')
AND P.post_status NOT IN (' . \implode( ', ', \array_fill( 0, \count( $excluded_post_statuses ), '%s' ) ) . ")
SELECT I.object_id from $indexable_table as I
WHERE I.object_type = 'post'
* Builds a query for selecting the ID's of unindexed posts.
* @param bool $limit The maximum number of post IDs to return.
* @return string The prepared query string.
protected function get_select_query( $limit = false ) {
$indexable_table = Model::get_table_name( 'Indexable' );
$post_types = $this->post_type_helper->get_indexable_post_types();
$excluded_post_statuses = $this->post_helper->get_excluded_post_statuses();
$replacements = \array_merge(
$replacements[] = $this->version;
$limit_query = 'LIMIT %d';
$replacements[] = $limit;
// Warning: If this query is changed, makes sure to update the query in get_count_query as well.
// @phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
return $this->wpdb->prepare(
FROM {$this->wpdb->posts} AS P
WHERE P.post_type IN (" . \implode( ', ', \array_fill( 0, \count( $post_types ), '%s' ) ) . ')
AND P.post_status NOT IN (' . \implode( ', ', \array_fill( 0, \count( $excluded_post_statuses ), '%s' ) ) . ")
SELECT I.object_id from $indexable_table as I
WHERE I.object_type = 'post'