: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
namespace Yoast\WP\SEO\Editors\Framework;
use Yoast\WP\SEO\Editors\Domain\Analysis_Features\Analysis_Feature_Interface;
* Describes if the previously used keyword feature should be enabled.
class Previously_Used_Keyphrase implements Analysis_Feature_Interface {
* If this analysis is enabled.
* @return bool If this analysis is enabled.
public function is_enabled(): bool {
* Filter to determine If the PreviouslyUsedKeyphrase assessment should run.
* @param bool $previouslyUsedKeyphraseActive If the PreviouslyUsedKeyphrase assessment should run.
return (bool) \apply_filters( 'wpseo_previously_used_keyword_active', true );
* Returns the name of the object.
public function get_name(): string {
return 'previouslyUsedKeyphrase';
* @return string The legacy key.
public function get_legacy_key(): string {
return 'previouslyUsedKeywordActive';