WP_Site_Health::get_test_persistent_object_cache()

	public function get_test_persistent_object_cache() {
		/**
		 * Filters the action URL for the persistent object cache health check.
		 *
		 * @since 6.1.0
		 *
		 * @param string $action_url Learn more link for persistent object cache health check.
		 */
		$action_url = apply_filters(
			'site_status_persistent_object_cache_url',
			/* translators: Localized Support reference. */
			__( 'https://wordpress.org/documentation/article/optimization/#persistent-object-cache' )
		);

		$result = array(
			'test'        => 'persistent_object_cache',
			'status'      => 'good',
			'badge'       => array(
				'label' => __( 'Performance' ),
				'color' => 'blue',
			),
			'label'       => __( 'A persistent object cache is being used' ),
			'description' => sprintf(
				'<p>%s</p>',
				__( 'A persistent object cache makes your site&#8217;s database more efficient, resulting in faster load times because ClassicPress can retrieve your site&#8217;s content and settings much more quickly.' )
			),
			'actions'     => sprintf(
				'<p><a href="%s" target="_blank" rel="noopener">%s <span class="screen-reader-text">%s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>',
				esc_url( $action_url ),
				__( 'Learn more about persistent object caching.' ),
				/* translators: Hidden accessibility text. */
				__( '(opens in a new tab)' )
			),
		);

		if ( wp_using_ext_object_cache() ) {
			return $result;
		}

		if ( ! $this->should_suggest_persistent_object_cache() ) {
			$result['label'] = __( 'A persistent object cache is not required' );

			return $result;
		}

		$available_services = $this->available_object_cache_services();

		$notes = __( 'Your hosting provider can tell you if a persistent object cache can be enabled on your site.' );

		if ( ! empty( $available_services ) ) {
			$notes .= ' ' . sprintf(
				/* translators: Available object caching services. */
				__( 'Your host appears to support the following object caching services: %s.' ),
				implode( ', ', $available_services )
			);
		}

		/**
		 * Filters the second paragraph of the health check's description
		 * when suggesting the use of a persistent object cache.
		 *
		 * Hosts may want to replace the notes to recommend their preferred object caching solution.
		 *
		 * Plugin authors may want to append notes (not replace) on why object caching is recommended for their plugin.
		 *
		 * @since 6.1.0
		 *
		 * @param string   $notes              The notes appended to the health check description.
		 * @param string[] $available_services The list of available persistent object cache services.
		 */
		$notes = apply_filters( 'site_status_persistent_object_cache_notes', $notes, $available_services );

		$result['status']       = 'recommended';
		$result['label']        = __( 'You should use a persistent object cache' );
		$result['description'] .= sprintf(
			'<p>%s</p>',
			wp_kses(
				$notes,
				array(
					'a'      => array( 'href' => true ),
					'code'   => true,
					'em'     => true,
					'strong' => true,
				)
			)
		);

		return $result;
	}