: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
namespace Yoast\WP\SEO\Services\Health_Check;
* Runs the Postname_Permalink health check.
class Postname_Permalink_Runner implements Runner_Interface {
* Is set to true when permalinks are set to contain the post name
private $permalinks_contain_postname;
public function __construct() {
$this->permalinks_contain_postname = false;
* Runs the health check. Checks if permalinks are set to contain the post name.
$this->permalinks_contain_postname = ( \strpos( \get_option( 'permalink_structure' ), '%postname%' ) !== false );
* Returns true if permalinks are set to contain the post name.
* @return bool True if permalinks are set to contain the post name.
public function is_successful() {
return $this->permalinks_contain_postname;