: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
namespace Yoast\WP\SEO\Conditionals\Third_Party;
use Yoast\WP\SEO\Conditionals\Conditional;
* Conditional that is only met when in the admin.
class W3_Total_Cache_Conditional implements Conditional {
* Returns whether or not this conditional is met.
* @return bool Whether or not the conditional is met.
public function is_met() {
if ( ! \defined( 'W3TC_DIR' ) ) {
return \function_exists( 'w3tc_objectcache_flush' );