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<?php |
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/** |
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* Health — shared diagnostic checks consumed by both Onboarding's |
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* environment surface and the Health module's dashboard panel. |
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* |
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* Each check returns: |
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* [ |
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* 'id' => 'wp_version', |
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* 'tone' => 'ok' | 'warn' | 'fail' | 'info', |
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* 'label' => 'WordPress 6.6', |
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* 'detail' => 'Meets the 6.0+ minimum.', |
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* ] |
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* |
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* Pure reads — never writes to disk, never makes outbound HTTP calls. |
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* Safe to call from any request including the loading dashboard. |
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* |
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* @package XSpeed |
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*/ |
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|
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declare(strict_types=1); |
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|
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namespace XSpeed; |
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|
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defined( 'ABSPATH' ) || exit; |
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|
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final class Health { |
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|
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public const OK = 'ok'; |
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public const WARN = 'warn'; |
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public const FAIL = 'fail'; |
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public const INFO = 'info'; |
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|
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private const SERVER_LABELS = array( |
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'apache' => 'Apache', |
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'litespeed' => 'LiteSpeed', |
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'nginx' => 'nginx', |
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'iis' => 'IIS', |
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'unknown' => 'Unknown', |
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); |
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|
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/** |
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* Full check list used by the Health module's dashboard panel. |
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* |
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* @return array<int,array{id:string,tone:string,label:string,detail:string}> |
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*/ |
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public static function checks(): array { |
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global $wp_version; |
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|
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$server_type = Server::type(); |
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$gzip_mode = Server::gzip_mode(); |
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$conflicts = Server::conflicts(); |
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$cache_dir = defined( 'XSPEED_CACHE_DIR' ) ? XSPEED_CACHE_DIR : ( WP_CONTENT_DIR . '/cache/xspeed' ); |
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|
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$out = array(); |
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|
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// WordPress version |
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$wp_ok = version_compare( (string) $wp_version, '6.0', '>=' ); |
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$out[] = array( |
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'id' => 'wp_version', |
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'tone' => $wp_ok ? self::OK : self::FAIL, |
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'label' => sprintf( 'WordPress %s', (string) $wp_version ), |
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'detail' => $wp_ok ? 'Meets the 6.0+ minimum.' : 'Upgrade to WordPress 6.0 or higher.', |
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); |
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|
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// PHP version |
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$php_ok = version_compare( PHP_VERSION, '7.4', '>=' ); |
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$php_modern = version_compare( PHP_VERSION, '8.1', '>=' ); |
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$out[] = array( |
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'id' => 'php_version', |
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'tone' => $php_modern ? self::OK : ( $php_ok ? self::WARN : self::FAIL ), |
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'label' => sprintf( 'PHP %s', PHP_VERSION ), |
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'detail' => $php_modern |
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? 'Modern PHP — full speed.' |
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: ( $php_ok |
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? 'Works, but 8.1+ is recommended for best performance.' |
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: 'Upgrade to PHP 7.4 or higher.' ), |
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); |
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|
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// Server |
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$out[] = array( |
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'id' => 'server', |
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'tone' => self::INFO, |
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'label' => sprintf( 'Server: %s', self::SERVER_LABELS[ $server_type ] ?? 'Unknown' ), |
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'detail' => 'auto' === $gzip_mode |
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? 'GZIP can be auto-configured via .htaccess.' |
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: 'GZIP requires a manual server-config snippet (shown in the GZIP module).', |
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); |
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|
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// Cache directory writable |
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$dir_writable = wp_mkdir_p( $cache_dir ) && wp_is_writable( $cache_dir ); |
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$out[] = array( |
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'id' => 'cache_dir', |
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'tone' => $dir_writable ? self::OK : self::FAIL, |
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'label' => 'Cache directory writable', |
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'detail' => $dir_writable |
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? $cache_dir |
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: sprintf( 'Cannot write to %s. Adjust file permissions before enabling cache.', $cache_dir ), |
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); |
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|
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// Drop-in installed (only when cache is enabled — otherwise N/A) |
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$cache_enabled = (bool) Settings::get()['cache_enabled']; |
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if ( $cache_enabled ) { |
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$dropin_path = WP_CONTENT_DIR . '/advanced-cache.php'; |
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$dropin_match = file_exists( $dropin_path ) && false !== strpos( (string) file_get_contents( $dropin_path ), 'xspeed' ); |
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$out[] = array( |
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'id' => 'dropin', |
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'tone' => $dropin_match ? self::OK : self::FAIL, |
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'label' => 'advanced-cache.php drop-in', |
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'detail' => $dropin_match |
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? 'Installed and owned by xSpeed.' |
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: 'Drop-in missing or owned by another plugin. Toggle Enable Cache off and on to reinstall.', |
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); |
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} |
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|
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// WP_CACHE constant |
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$wp_cache_const = defined( 'WP_CACHE' ) && WP_CACHE; |
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if ( $cache_enabled ) { |
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$out[] = array( |
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'id' => 'wp_cache_constant', |
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'tone' => $wp_cache_const ? self::OK : self::WARN, |
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'label' => 'WP_CACHE constant', |
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'detail' => $wp_cache_const |
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? 'Defined and truthy in wp-config.php.' |
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: 'Not set. Cache is configured but WordPress will not load the drop-in until WP_CACHE = true is added to wp-config.php.', |
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); |
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} |
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|
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// Static-rewrite probe. Active end-to-end check: writes a probe |
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// file under the static-cache dir, fetches it over HTTP, and |
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// confirms the web server (nginx OR Apache/LiteSpeed) served |
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// the raw file. Result is throttled to a 5-minute transient |
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// inside Cache::probe_static_rewrite so we never hit the |
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// network per-paint. |
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if ( $cache_enabled ) { |
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$server_type = Server::type(); |
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// The live loopback probe only matters where a server-level static |
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// rewrite is actually used (nginx snippet / Apache .htaccess). |
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// LiteSpeed serves hits via the drop-in (see below), so skip the |
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// probe there entirely — no needless self-request. Health is the |
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// right place to pay for the probe when we DO run it (the admin |
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// bootstrap reads cache-only so it never blocks); the 5-minute |
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// transient still throttles repeat runs. (FBS-82142) |
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$probe = ( Server::LITESPEED === $server_type ) |
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? array( 'active' => false ) |
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: Cache::probe_static_rewrite( true ); |
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$is_active = (bool) ( $probe['active'] ?? false ); |
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|
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$block_reason = Cache::static_rewrite_block_reason(); |
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$mobile_block = ( 'mobile_separate' === $block_reason ) |
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? ' Note: Separate Mobile Cache is on, which disables the device-blind static rewrite — if your site serves the same HTML to all devices, turn it off (Cache settings) for much faster cache hits.' |
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: ''; |
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|
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if ( Server::NGINX === $server_type ) { |
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$out[] = array( |
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'id' => 'static_rewrite_nginx', |
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'tone' => $is_active ? self::OK : self::WARN, |
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'label' => 'Static-file rewrite (nginx server config)', |
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'detail' => $is_active |
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? 'nginx is serving cache hits directly — PHP bypassed (~5-15ms TTFB).' |
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: ( 'mobile_separate' === $block_reason |
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? 'nginx detected, but the static rewrite is disabled because Separate Mobile Cache is on.' . $mobile_block |
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: 'nginx detected but not yet routing to the cache. Paste the snippet below into your site\'s server { } block, then reload nginx.' ), |
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// Always ship the snippet — even when active, so the |
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// admin has it handy for re-pasting after a server |
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// rebuild without having to find it elsewhere. Mirror |
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// the SAME unified block the "Server config" panel |
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// renders (cache + gzip + browser-cache directives), |
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// not the cache-only snippet — otherwise Health and |
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// the Cache panel disagree on what to paste. |
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'snippet' => Cache::full_nginx_server_block(), |
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); |
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} elseif ( Server::LITESPEED === $server_type ) { |
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// LiteSpeed intentionally does NOT use the .htaccess static |
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// rewrite: OpenLiteSpeed's .htaccess engine ignores |
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// mod_headers (so we can't stamp X-XSpeed-Cache: HIT) and has |
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// no per-rule access_log (so a static hit can't be counted). |
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// We route LiteSpeed hits through the PHP drop-in instead, so |
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// every hit is both visible (X-XSpeed-Cache: HIT) and counted |
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// in the hit-ratio — see Cache::static_rewrite_allowed(). This |
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// is the healthy, expected state on LiteSpeed, not a fallback. |
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$out[] = array( |
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'id' => 'static_rewrite_litespeed', |
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'tone' => self::OK, |
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'label' => 'Cache serving (LiteSpeed)', |
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'detail' => 'Cache hits are served by xSpeed\'s drop-in and tagged X-XSpeed-Cache: HIT — so every hit is visible and counted in your hit-ratio. (LiteSpeed\'s .htaccess can\'t add that header or log static hits, so xSpeed serves them itself for accurate reporting.)', |
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); |
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} elseif ( Server::APACHE === $server_type ) { |
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$installed = Cache::rewrite_installed(); |
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if ( $is_active ) { |
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$tone = self::OK; |
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$detail = 'Block installed and serving cache hits directly — PHP bypassed.'; |
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} elseif ( 'mobile_separate' === $block_reason ) { |
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$tone = self::WARN; |
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$detail = 'Static rewrite disabled because Separate Mobile Cache is on.' . $mobile_block; |
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} elseif ( ! $installed ) { |
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$tone = self::WARN; |
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$detail = 'Block missing from .htaccess. Toggle Enable Cache off and on to reinstall it.'; |
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} else { |
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$tone = self::WARN; |
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$detail = sprintf( 'Block installed but probe failed (%s). Confirm the .htaccess block is at the TOP of the file, and that AllowOverride is enabled for your site so mod_rewrite reads it.', (string) ( $probe['reason'] ?? 'unknown' ) ); |
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} |
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$out[] = array( |
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'id' => 'static_rewrite', |
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'tone' => $tone, |
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'label' => 'Static-file rewrite (.htaccess)', |
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'detail' => $detail, |
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); |
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} |
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} |
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|
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// Permalinks |
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$permalinks_ok = (bool) get_option( 'permalink_structure' ); |
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$out[] = array( |
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'id' => 'permalinks', |
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'tone' => $permalinks_ok ? self::OK : self::WARN, |
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'label' => 'Permalinks', |
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'detail' => $permalinks_ok |
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? 'Pretty permalinks active.' |
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: 'Set permalinks to anything other than "Plain" — page caching needs URL paths to key on.', |
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); |
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|
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// Conflicting plugins |
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$out[] = array( |
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'id' => 'conflicts', |
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'tone' => empty( $conflicts ) ? self::OK : self::WARN, |
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'label' => 'Caching plugin conflicts', |
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'detail' => empty( $conflicts ) |
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? 'No other caching plugins detected.' |
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: sprintf( 'Active: %s. Deactivate before enabling xSpeed cache to avoid double-caching.', implode( ', ', $conflicts ) ), |
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); |
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|
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return $out; |
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} |
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|
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/** |
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* Lightweight environment payload for the onboarding wizard. Keeps |
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* the legacy shape Onboarding::env_payload returned so the Welcome |
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* step's HealthRow rendering doesn't change. |
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*/ |
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public static function env_payload(): array { |
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global $wp_version; |
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$cache_dir = defined( 'XSPEED_CACHE_DIR' ) ? XSPEED_CACHE_DIR : ( WP_CONTENT_DIR . '/cache/xspeed' ); |
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return array( |
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'wp' => array( |
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'version' => (string) $wp_version, |
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'ok' => version_compare( (string) $wp_version, '6.0', '>=' ), |
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), |
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'php' => array( |
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'version' => PHP_VERSION, |
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'ok' => version_compare( PHP_VERSION, '7.4', '>=' ), |
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'modern' => version_compare( PHP_VERSION, '8.1', '>=' ), |
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), |
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'server' => array( |
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'type' => Server::type(), |
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'gzip_mode' => Server::gzip_mode(), |
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), |
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'cache_dir' => array( |
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'path' => $cache_dir, |
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'writable' => wp_mkdir_p( $cache_dir ) && wp_is_writable( $cache_dir ), |
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), |
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'wp_config' => array( |
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'writable' => self::wp_config_writable(), |
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), |
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'permalinks_ok' => (bool) get_option( 'permalink_structure' ), |
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'conflicts' => Server::conflicts(), |
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); |
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} |
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|
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private static function wp_config_writable(): bool { |
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$path = ABSPATH . 'wp-config.php'; |
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if ( ! file_exists( $path ) ) { |
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$path = dirname( ABSPATH ) . '/wp-config.php'; |
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} |
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return file_exists( $path ) && wp_is_writable( $path ); |
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} |
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} |
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|
