' . implode( ', ', $page_cache_detail['headers'] ) . '.';
$page_cache_test_summary[] = $headers_summary;
}
}
if ( $page_cache_detail['advanced_cache_present'] ) {
$page_cache_test_summary[] = ' ' . __( 'A page cache plugin was detected.' );
} elseif ( ! ( is_array( $page_cache_detail ) && ! empty( $page_cache_detail['headers'] ) ) ) {
// Note: This message is not shown if client caching response headers were present since an external caching layer may be employed.
$page_cache_test_summary[] = ' ' . __( 'A page cache plugin was not detected.' );
}
$result['description'] .= '%s
', __( 'A persistent object cache makes your site’s database more efficient, resulting in faster load times because WordPress can retrieve your site’s content and settings much more quickly.' ) ), 'actions' => sprintf( '', 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( '%s
', wp_kses( $notes, array( 'a' => array( 'href' => true ), 'code' => true, 'em' => true, 'strong' => true, ) ) ); return $result; } /** * Calculates total amount of autoloaded data. * * @since 6.6.0 * * @return int Autoloaded data in bytes. */ public function get_autoloaded_options_size() { $alloptions = wp_load_alloptions(); $total_length = 0; foreach ( $alloptions as $option_value ) { if ( is_array( $option_value ) || is_object( $option_value ) ) { $option_value = maybe_serialize( $option_value ); } $total_length += strlen( (string) $option_value ); } return $total_length; } /** * Tests the number of autoloaded options. * * @since 6.6.0 * * @return array The test results. */ public function get_test_autoloaded_options() { $autoloaded_options_size = $this->get_autoloaded_options_size(); $autoloaded_options_count = count( wp_load_alloptions() ); $base_description = __( 'Autoloaded options are configuration settings for plugins and themes that are automatically loaded with every page load in WordPress. Having too many autoloaded options can slow down your site.' ); $result = array( 'label' => __( 'Autoloaded options are acceptable' ), 'status' => 'good', 'badge' => array( 'label' => __( 'Performance' ), 'color' => 'blue', ), 'description' => sprintf( /* translators: 1: Number of autoloaded options, 2: Autoloaded options size. */ '' . esc_html( $base_description ) . ' ' . __( 'Your site has %1$s autoloaded options (size: %2$s) in the options table, which is acceptable.' ) . '
', $autoloaded_options_count, size_format( $autoloaded_options_size ) ), 'actions' => '', 'test' => 'autoloaded_options', ); /** * Filters max bytes threshold to trigger warning in Site Health. * * @since 6.6.0 * * @param int $limit Autoloaded options threshold size. Default 800000. */ $limit = apply_filters( 'site_status_autoloaded_options_size_limit', 800000 ); if ( $autoloaded_options_size < $limit ) { return $result; } $result['status'] = 'critical'; $result['label'] = __( 'Autoloaded options could affect performance' ); $result['description'] = sprintf( /* translators: 1: Number of autoloaded options, 2: Autoloaded options size. */ '' . esc_html( $base_description ) . ' ' . __( 'Your site has %1$s autoloaded options (size: %2$s) in the options table, which could cause your site to be slow. You can review the options being autoloaded in your database and remove any options that are no longer needed by your site.' ) . '
', $autoloaded_options_count, size_format( $autoloaded_options_size ) ); /** * Filters description to be shown on Site Health warning when threshold is met. * * @since 6.6.0 * * @param string $description Description message when autoloaded options bigger than threshold. */ $result['description'] = apply_filters( 'site_status_autoloaded_options_limit_description', $result['description'] ); $result['actions'] = sprintf( /* translators: 1: HelpHub URL, 2: Link description. */ '', esc_url( __( 'https://developer.wordpress.org/advanced-administration/performance/optimization/#autoloaded-options' ) ), __( 'More info about optimizing autoloaded options' ) ); /** * Filters actionable information to tackle the problem. It can be a link to an external guide. * * @since 6.6.0 * * @param string $actions Call to Action to be used to point to the right direction to solve the issue. */ $result['actions'] = apply_filters( 'site_status_autoloaded_options_action_to_perform', $result['actions'] ); return $result; } /** * Tests whether search engine indexing is enabled. * * Surfaces as “good” if `blog_public === 1`, or “recommended” if `blog_public === 0`. * * @since 6.9.0 * * @return array The test results. */ public function get_test_search_engine_visibility() { $result = array( 'label' => __( 'Search engine indexing is enabled.', 'default' ), 'status' => 'good', 'badge' => array( 'label' => __( 'Privacy', 'default' ), 'color' => 'blue', ), 'description' => sprintf( '%s
', __( 'Search engines can crawl and index your site. No action needed.', 'default' ) ), 'actions' => sprintf( '', esc_url( admin_url( 'options-reading.php#blog_public' ) ), __( 'Review your visibility settings', 'default' ) ), 'test' => 'search_engine_visibility', ); // If indexing is discouraged, flip to “recommended”: if ( ! get_option( 'blog_public' ) ) { $result['status'] = 'recommended'; $result['label'] = __( 'Search engines are discouraged from indexing this site.', 'default' ); $result['badge']['color'] = 'blue'; $result['description'] = sprintf( '%s
', __( 'Your site is hidden from search engines. Consider enabling indexing if this is a public site.', 'default' ) ); } return $result; } /** * Returns a set of tests that belong to the site status page. * * Each site status test is defined here, they may be `direct` tests, that run on page load, or `async` tests * which will run later down the line via JavaScript calls to improve page performance and hopefully also user * experiences. * * @since 5.2.0 * @since 5.6.0 Added support for `has_rest` and `permissions`. * * @return array The list of tests to run. */ public static function get_tests() { $tests = array( 'direct' => array( 'wordpress_version' => array( 'label' => __( 'WordPress Version' ), 'test' => 'wordpress_version', ), 'plugin_version' => array( 'label' => __( 'Plugin Versions' ), 'test' => 'plugin_version', ), 'theme_version' => array( 'label' => __( 'Theme Versions' ), 'test' => 'theme_version', ), 'php_version' => array( 'label' => __( 'PHP Version' ), 'test' => 'php_version', ), 'php_extensions' => array( 'label' => __( 'PHP Extensions' ), 'test' => 'php_extensions', ), 'php_default_timezone' => array( 'label' => __( 'PHP Default Timezone' ), 'test' => 'php_default_timezone', ), 'php_sessions' => array( 'label' => __( 'PHP Sessions' ), 'test' => 'php_sessions', ), 'sql_server' => array( 'label' => __( 'Database Server version' ), 'test' => 'sql_server', ), 'ssl_support' => array( 'label' => __( 'Secure communication' ), 'test' => 'ssl_support', ), 'scheduled_events' => array( 'label' => __( 'Scheduled events' ), 'test' => 'scheduled_events', ), 'http_requests' => array( 'label' => __( 'HTTP Requests' ), 'test' => 'http_requests', ), 'rest_availability' => array( 'label' => __( 'REST API availability' ), 'test' => 'rest_availability', 'skip_cron' => true, ), 'debug_enabled' => array( 'label' => __( 'Debugging enabled' ), 'test' => 'is_in_debug_mode', ), 'file_uploads' => array( 'label' => __( 'File uploads' ), 'test' => 'file_uploads', ), 'plugin_theme_auto_updates' => array( 'label' => __( 'Plugin and theme auto-updates' ), 'test' => 'plugin_theme_auto_updates', ), 'update_temp_backup_writable' => array( 'label' => __( 'Plugin and theme temporary backup directory access' ), 'test' => 'update_temp_backup_writable', ), 'available_updates_disk_space' => array( 'label' => __( 'Available disk space' ), 'test' => 'available_updates_disk_space', ), 'autoloaded_options' => array( 'label' => __( 'Autoloaded options' ), 'test' => 'autoloaded_options', ), 'search_engine_visibility' => array( 'label' => __( 'Search Engine Visibility' ), 'test' => 'search_engine_visibility', ), ), 'async' => array( 'dotorg_communication' => array( 'label' => __( 'Communication with WordPress.org' ), 'test' => rest_url( 'wp-site-health/v1/tests/dotorg-communication' ), 'has_rest' => true, 'async_direct_test' => array( WP_Site_Health::get_instance(), 'get_test_dotorg_communication' ), ), 'background_updates' => array( 'label' => __( 'Background updates' ), 'test' => rest_url( 'wp-site-health/v1/tests/background-updates' ), 'has_rest' => true, 'async_direct_test' => array( WP_Site_Health::get_instance(), 'get_test_background_updates' ), ), 'loopback_requests' => array( 'label' => __( 'Loopback request' ), 'test' => rest_url( 'wp-site-health/v1/tests/loopback-requests' ), 'has_rest' => true, 'async_direct_test' => array( WP_Site_Health::get_instance(), 'get_test_loopback_requests' ), ), 'https_status' => array( 'label' => __( 'HTTPS status' ), 'test' => rest_url( 'wp-site-health/v1/tests/https-status' ), 'has_rest' => true, 'async_direct_test' => array( WP_Site_Health::get_instance(), 'get_test_https_status' ), ), ), ); // Conditionally include Authorization header test if the site isn't protected by Basic Auth. if ( ! wp_is_site_protected_by_basic_auth() ) { $tests['async']['authorization_header'] = array( 'label' => __( 'Authorization header' ), 'test' => rest_url( 'wp-site-health/v1/tests/authorization-header' ), 'has_rest' => true, 'headers' => array( 'Authorization' => 'Basic ' . base64_encode( 'user:pwd' ) ), 'skip_cron' => true, ); } // Only check for caches in production environments. if ( 'production' === wp_get_environment_type() ) { $tests['async']['page_cache'] = array( 'label' => __( 'Page cache' ), 'test' => rest_url( 'wp-site-health/v1/tests/page-cache' ), 'has_rest' => true, 'async_direct_test' => array( WP_Site_Health::get_instance(), 'get_test_page_cache' ), ); $tests['direct']['persistent_object_cache'] = array( 'label' => __( 'Persistent object cache' ), 'test' => 'persistent_object_cache', ); } /** * Filters which site status tests are run on a site. * * The site health is determined by a set of tests based on best practices from * both the WordPress Hosting Team and web standards in general. * * Some sites may not have the same requirements, for example the automatic update * checks may be handled by a host, and are therefore disabled in core. * Or maybe you want to introduce a new test, is caching enabled/disabled/stale for example. * * Tests may be added either as direct, or asynchronous ones. Any test that may require some time * to complete should run asynchronously, to avoid extended loading periods within wp-admin. * * @since 5.2.0 * @since 5.6.0 Added the `async_direct_test` array key for asynchronous tests. * Added the `skip_cron` array key for all tests. * * @param array[] $tests { * An associative array of direct and asynchronous tests. * * @type array[] $direct { * An array of direct tests. * * @type array ...$identifier { * `$identifier` should be a unique identifier for the test. Plugins and themes are encouraged to * prefix test identifiers with their slug to avoid collisions between tests. * * @type string $label The friendly label to identify the test. * @type callable $test The callback function that runs the test and returns its result. * @type bool $skip_cron Whether to skip this test when running as cron. * } * } * @type array[] $async { * An array of asynchronous tests. * * @type array ...$identifier { * `$identifier` should be a unique identifier for the test. Plugins and themes are encouraged to * prefix test identifiers with their slug to avoid collisions between tests. * * @type string $label The friendly label to identify the test. * @type string $test An admin-ajax.php action to be called to perform the test, or * if `$has_rest` is true, a URL to a REST API endpoint to perform * the test. * @type bool $has_rest Whether the `$test` property points to a REST API endpoint. * @type bool $skip_cron Whether to skip this test when running as cron. * @type callable $async_direct_test A manner of directly calling the test marked as asynchronous, * as the scheduled event can not authenticate, and endpoints * may require authentication. * } * } * } */ $tests = apply_filters( 'site_status_tests', $tests ); // Ensure that the filtered tests contain the required array keys. $tests = array_merge( array( 'direct' => array(), 'async' => array(), ), $tests ); return $tests; } /** * Adds a class to the body HTML tag. * * Filters the body class string for admin pages and adds our own class for easier styling. * * @since 5.2.0 * * @param string $body_class The body class string. * @return string The modified body class string. */ public function admin_body_class( $body_class ) { $screen = get_current_screen(); if ( 'site-health' !== $screen->id ) { return $body_class; } $body_class .= ' site-health'; return $body_class; } /** * Initiates the WP_Cron schedule test cases. * * @since 5.2.0 */ private function wp_schedule_test_init() { $this->schedules = wp_get_schedules(); $this->get_cron_tasks(); } /** * Populates the list of cron events and store them to a class-wide variable. * * @since 5.2.0 */ private function get_cron_tasks() { $cron_tasks = _get_cron_array(); if ( empty( $cron_tasks ) ) { $this->crons = new WP_Error( 'no_tasks', __( 'No scheduled events exist on this site.' ) ); return; } $this->crons = array(); foreach ( $cron_tasks as $time => $cron ) { foreach ( $cron as $hook => $dings ) { foreach ( $dings as $sig => $data ) { $this->crons[ "$hook-$sig-$time" ] = (object) array( 'hook' => $hook, 'time' => $time, 'sig' => $sig, 'args' => $data['args'], 'schedule' => $data['schedule'], 'interval' => isset( $data['interval'] ) ? $data['interval'] : null, ); } } } } /** * Checks if any scheduled tasks have been missed. * * Returns a boolean value of `true` if a scheduled task has been missed and ends processing. * * If the list of crons is an instance of WP_Error, returns the instance instead of a boolean value. * * @since 5.2.0 * * @return bool|WP_Error True if a cron was missed, false if not. WP_Error if the cron is set to that. */ public function has_missed_cron() { if ( is_wp_error( $this->crons ) ) { return $this->crons; } foreach ( $this->crons as $id => $cron ) { if ( ( $cron->time - time() ) < $this->timeout_missed_cron ) { $this->last_missed_cron = $cron->hook; return true; } } return false; } /** * Checks if any scheduled tasks are late. * * Returns a boolean value of `true` if a scheduled task is late and ends processing. * * If the list of crons is an instance of WP_Error, returns the instance instead of a boolean value. * * @since 5.3.0 * * @return bool|WP_Error True if a cron is late, false if not. WP_Error if the cron is set to that. */ public function has_late_cron() { if ( is_wp_error( $this->crons ) ) { return $this->crons; } foreach ( $this->crons as $id => $cron ) { $cron_offset = $cron->time - time(); if ( $cron_offset >= $this->timeout_missed_cron && $cron_offset < $this->timeout_late_cron ) { $this->last_late_cron = $cron->hook; return true; } } return false; } /** * Checks for potential issues with plugin and theme auto-updates. * * Though there is no way to 100% determine if plugin and theme auto-updates are configured * correctly, a few educated guesses could be made to flag any conditions that would * potentially cause unexpected behaviors. * * @since 5.5.0 * * @return object The test results. */ public function detect_plugin_theme_auto_update_issues() { $mock_plugin = (object) array( 'id' => 'w.org/plugins/a-fake-plugin', 'slug' => 'a-fake-plugin', 'plugin' => 'a-fake-plugin/a-fake-plugin.php', 'new_version' => '9.9', 'url' => 'https://wordpress.org/plugins/a-fake-plugin/', 'package' => 'https://downloads.wordpress.org/plugin/a-fake-plugin.9.9.zip', 'icons' => array( '2x' => 'https://ps.w.org/a-fake-plugin/assets/icon-256x256.png', '1x' => 'https://ps.w.org/a-fake-plugin/assets/icon-128x128.png', ), 'banners' => array( '2x' => 'https://ps.w.org/a-fake-plugin/assets/banner-1544x500.png', '1x' => 'https://ps.w.org/a-fake-plugin/assets/banner-772x250.png', ), 'banners_rtl' => array(), 'tested' => '5.5.0', 'requires_php' => '5.6.20', 'compatibility' => new stdClass(), ); $mock_theme = (object) array( 'theme' => 'a-fake-theme', 'new_version' => '9.9', 'url' => 'https://wordpress.org/themes/a-fake-theme/', 'package' => 'https://downloads.wordpress.org/theme/a-fake-theme.9.9.zip', 'requires' => '5.0.0', 'requires_php' => '5.6.20', ); $test_plugins_enabled = wp_is_auto_update_forced_for_item( 'plugin', true, $mock_plugin ); $test_themes_enabled = wp_is_auto_update_forced_for_item( 'theme', true, $mock_theme ); $ui_enabled_for_plugins = wp_is_auto_update_enabled_for_type( 'plugin' ); $ui_enabled_for_themes = wp_is_auto_update_enabled_for_type( 'theme' ); $plugin_filter_present = has_filter( 'auto_update_plugin' ); $theme_filter_present = has_filter( 'auto_update_theme' ); if ( ( ! $test_plugins_enabled && $ui_enabled_for_plugins ) || ( ! $test_themes_enabled && $ui_enabled_for_themes ) ) { return (object) array( 'status' => 'critical', 'message' => __( 'Auto-updates for plugins and/or themes appear to be disabled, but settings are still set to be displayed. This could cause auto-updates to not work as expected.' ), ); } if ( ( ! $test_plugins_enabled && $plugin_filter_present ) && ( ! $test_themes_enabled && $theme_filter_present ) ) { return (object) array( 'status' => 'recommended', 'message' => __( 'Auto-updates for plugins and themes appear to be disabled. This will prevent your site from receiving new versions automatically when available.' ), ); } elseif ( ! $test_plugins_enabled && $plugin_filter_present ) { return (object) array( 'status' => 'recommended', 'message' => __( 'Auto-updates for plugins appear to be disabled. This will prevent your site from receiving new versions automatically when available.' ), ); } elseif ( ! $test_themes_enabled && $theme_filter_present ) { return (object) array( 'status' => 'recommended', 'message' => __( 'Auto-updates for themes appear to be disabled. This will prevent your site from receiving new versions automatically when available.' ), ); } return (object) array( 'status' => 'good', 'message' => __( 'There appear to be no issues with plugin and theme auto-updates.' ), ); } /** * Runs a loopback test on the site. * * Loopbacks are what WordPress uses to communicate with itself to start up WP_Cron, scheduled posts, * make sure plugin or theme edits don't cause site failures and similar. * * @since 5.2.0 * * @return object The test results. */ public function can_perform_loopback() { $body = array( 'site-health' => 'loopback-test' ); $cookies = wp_unslash( $_COOKIE ); $timeout = 10; // 10 seconds. $headers = array( 'Cache-Control' => 'no-cache', ); /** This filter is documented in wp-includes/class-wp-http-streams.php */ $sslverify = apply_filters( 'https_local_ssl_verify', false ); // Include Basic auth in loopback requests. if ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) { $headers['Authorization'] = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) ); } $url = site_url( 'wp-cron.php' ); /* * A post request is used for the wp-cron.php loopback test to cause the file * to finish early without triggering cron jobs. This has two benefits: * - cron jobs are not triggered a second time on the site health page, * - the loopback request finishes sooner providing a quicker result. * * Using a POST request causes the loopback to differ slightly to the standard * GET request WordPress uses for wp-cron.php loopback requests but is close * enough. See https://core.trac.wordpress.org/ticket/52547 */ $r = wp_remote_post( $url, compact( 'body', 'cookies', 'headers', 'timeout', 'sslverify' ) ); if ( is_wp_error( $r ) ) { return (object) array( 'status' => 'critical', 'message' => sprintf( '%s