fix_folders( $config, $exs );
if ( $config->get_boolean( 'config.check' ) || $force_all_checks ) {
if ( $config->get_boolean( 'minify.enabled' ) &&
Util_Rule::can_check_rules() &&
$config->get_boolean( 'minify.rewrite' ) ) {
$this->rules_core_add( $config, $exs );
} else {
$this->rules_core_remove( $exs );
}
if ( $config->get_boolean( 'minify.enabled' ) &&
$config->get_string( 'minify.engine' ) == 'file' ) {
$this->rules_cache_add( $config, $exs );
} else {
$this->rules_cache_remove( $exs );
}
}
// if no errors so far - check if rewrite actually works
if ( count( $exs->exceptions() ) <= 0 ) {
try {
if ( $config->get_boolean( 'minify.enabled' ) &&
$config->get_boolean( 'minify.rewrite' ) &&
$config->get_boolean( 'minify.debug' ) )
$this->verify_rewrite_working();
} catch ( \Exception $ex ) {
$exs->push( $ex );
}
if ( $config->get_boolean( 'minify.enabled' ) )
$this->verify_engine_working( $config, $exs );
}
if ( count( $exs->exceptions() ) > 0 )
throw $exs;
}
/**
* Fixes environment once event occurs
*
* @param Config $config
* @param string $event
* @param null|Config $old_config
* @throws Util_Environment_Exceptions
*/
public function fix_on_event( $config, $event, $old_config = null ) {
// Schedules events
if ( $config->get_boolean( 'minify.enabled' ) &&
$config->get_string( 'minify.engine' ) == 'file' ) {
if ( $old_config != null &&
$config->get_integer( 'minify.file.gc' ) !=
$old_config->get_integer( 'minify.file.gc' ) ) {
$this->unschedule();
}
if ( !wp_next_scheduled( 'w3_minify_cleanup' ) ) {
wp_schedule_event( time(),
'w3_minify_cleanup', 'w3_minify_cleanup' );
}
} else {
$this->unschedule();
}
}
/**
* Fixes environment after plugin deactivation
*
* @throws Util_Environment_Exceptions
*/
public function fix_after_deactivation() {
$exs = new Util_Environment_Exceptions();
$this->rules_core_remove( $exs );
$this->rules_cache_remove( $exs );
$this->unschedule();
if ( count( $exs->exceptions() ) > 0 )
throw $exs;
}
/**
*
*
* @param Config $config
* @return array
*/
function get_required_rules( $config ) {
if ( !$config->get_boolean( 'minify.enabled' ) )
return null;
$rewrite_rules = array();
if ( $config->get_string( 'minify.engine' ) == 'file' ) {
$minify_rules_cache_path = Util_Rule::get_minify_rules_cache_path();
$rewrite_rules[] = array(
'filename' => $minify_rules_cache_path,
'content' => $this->rules_cache_generate( $config )
);
}
$minify_rules_core_path = Util_Rule::get_minify_rules_core_path();
$rewrite_rules[] = array(
'filename' => $minify_rules_core_path,
'content' => $this->rules_core_generate( $config ),
'priority' => 1000
);
return $rewrite_rules;
}
/**
* Fixes folders
*
* @param Config $config
* @param Util_Environment_Exceptions $exs
*/
private function fix_folders( $config, $exs ) {
// folder that we delete if exists and not writeable
if ( $config->get_boolean( 'minify.enabled' ) &&
$config->get_string( 'minify.engine' ) == 'file' ) {
$dir = W3TC_CACHE_MINIFY_DIR;
try{
if ( file_exists( $dir ) && !is_writeable( $dir ) )
Util_WpFile::delete_folder( $dir, '', isset( $_SERVER['REQUEST_URI'] ) ? esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '' );
} catch ( Util_WpFile_FilesystemRmdirException $ex ) {
$exs->push( $ex );
}
}
}
/**
* Minifiers availability error handling
*
* @param Config $config
* @param Util_Environment_Exceptions $exs
*/
private function verify_engine_working( $config, $exs ) {
$minifiers_errors = array();
if ( $config->get_string( 'minify.js.engine' ) == 'yuijs' ) {
$path_java = $config->get_string( 'minify.yuijs.path.java' );
$path_jar = $config->get_string( 'minify.yuijs.path.jar' );
if ( !file_exists( $path_java ) ) {
$minifiers_errors[] = sprintf( 'YUI Compressor (JS): JAVA executable path was not found. The default minifier JSMin will be used instead.' );
} elseif ( !file_exists( $path_jar ) ) {
$minifiers_errors[] = sprintf( 'YUI Compressor (JS): JAR file path was not found. The default minifier JSMin will be used instead.' );
}
}
if ( $config->get_string( 'minify.css.engine' ) == 'yuicss' ) {
$path_java = $config->get_string( 'minify.yuicss.path.java' );
$path_jar = $config->get_string( 'minify.yuicss.path.jar' );
if ( !file_exists( $path_java ) ) {
$minifiers_errors[] = sprintf( 'YUI Compressor (CSS): JAVA executable path was not found. The default CSS minifier will be used instead.' );
} elseif ( !file_exists( $path_jar ) ) {
$minifiers_errors[] = sprintf( 'YUI Compressor (CSS): JAR file path was not found. The default CSS minifier will be used instead.' );
}
}
if ( $config->get_string( 'minify.js.engine' ) == 'ccjs' ) {
$path_java = $config->get_string( 'minify.ccjs.path.java' );
$path_jar = $config->get_string( 'minify.ccjs.path.jar' );
if ( !file_exists( $path_java ) ) {
$minifiers_errors[] = sprintf( 'Closure Compiler: JAVA executable path was not found. The default minifier JSMin will be used instead.' );
} elseif ( !file_exists( $path_jar ) ) {
$minifiers_errors[] = sprintf( 'Closure Compiler: JAR file path was not found. The default minifier JSMin will be used instead.' );
}
}
if ( count( $minifiers_errors ) ) {
$minify_error = 'The following minifiers cannot be found or are no longer working:';
foreach ( $minifiers_errors as $minifiers_error ) {
$minify_error .= '- ' . $minifiers_error . '
';
}
$minify_error .= '
This message will automatically disappear once the issue is resolved.';
$exs->push( new Util_Environment_Exception( $minify_error ) );
}
}
/**
* Checks rewrite
*
* @throws Util_Environment_Exceptions
*/
private function verify_rewrite_working() {
$url = Minify_Core::minified_url( rand() . 'w3tc_rewrite_test.css' );
$result = $this->test_rewrite( $url );
if ( $result != 'ok' ) {
$home_url = get_home_url();
$tech_message =
( Util_Environment::is_nginx() ? 'nginx configuration file' : '.htaccess file' ) .
' contains rules to rewrite url ' .
$url . '. If handled by ' .
'plugin, it returns "Minify OK" message.
';
$tech_message .= 'The plugin made a request to ' .
$url . ' but received:
' .
$result . '
';
$tech_message .= 'instead of "Minify OK" response.
';
$error = 'W3 Total Cache error:It appears Minify ' .
'URL ' .
'rewriting is not working. ';
if ( Util_Environment::is_nginx() ) {
$error .= 'Please verify that all configuration files are ' .
'included in the configuration file ' .
'(and that you have reloaded / restarted nginx).';
} else {
$error .= 'Please verify that the server configuration ' .
'allows .htaccess';
}
$error .= '
Unfortunately minification will ' .
'not function without custom rewrite rules. ' .
'Please ask your server administrator for assistance. ' .
'Also refer to the install page for the rules for your server.';
throw new Util_Environment_Exception( $error, $tech_message );
}
}
/**
* Perform rewrite test
*
* @param string $url
* @return boolean
*/
private function test_rewrite( $url ) {
$key = sprintf( 'w3tc_rewrite_test_%s', substr( md5( $url ), 0, 16 ) );
$result = get_site_transient( $key );
if ( $result != 'ok' ) {
$response = Util_Http::get( $url );
$is_ok = ( !is_wp_error( $response ) &&
$response['response']['code'] == 200 &&
trim( $response['body'] ) == 'Minify OK' );
if ( $is_ok )
$result = 'ok';
else {
if ( is_wp_error( $response ) )
$result = $response->get_error_message();
else {
$result = '
' .
print_r( $response['response'], true ) .
'
';
}
}
set_site_transient( $key, $result, 30 );
}
return $result;
}
/**
* scheduling stuff
*/
private function unschedule() {
if ( wp_next_scheduled( 'w3_minify_cleanup' ) ) {
wp_clear_scheduled_hook( 'w3_minify_cleanup' );
}
}
/**
* rules core modification
*/
/**
* Writes directives to WP .htaccess
*
* @throws Util_WpFile_FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
*/
private function rules_core_add( $config, $exs ) {
Util_Rule::add_rules( $exs, Util_Rule::get_minify_rules_core_path(),
$this->rules_core_generate( $config ),
W3TC_MARKER_BEGIN_MINIFY_CORE,
W3TC_MARKER_END_MINIFY_CORE,
array(
W3TC_MARKER_BEGIN_PGCACHE_CORE => 0,
W3TC_MARKER_BEGIN_WORDPRESS => 0,
W3TC_MARKER_END_BROWSERCACHE_CACHE => strlen( W3TC_MARKER_END_BROWSERCACHE_CACHE ) + 1,
W3TC_MARKER_END_PGCACHE_CACHE => strlen( W3TC_MARKER_END_PGCACHE_CACHE ) + 1,
W3TC_MARKER_END_MINIFY_CACHE => strlen( W3TC_MARKER_END_MINIFY_CACHE ) + 1
)
);
}
/**
* Removes Page Cache core directives
*
* @param Util_Environment_Exceptions $exs
* @throws Util_WpFile_FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
*/
private function rules_core_remove( $exs ) {
// no need to remove rules for apache - its in cache .htaccess file
if ( !Util_Environment::is_nginx() )
return;
Util_Rule::remove_rules( $exs,
Util_Rule::get_minify_rules_core_path(),
W3TC_MARKER_BEGIN_MINIFY_CORE ,
W3TC_MARKER_END_MINIFY_CORE );
}
/**
* Generates rules for WP dir
*
* @param Config $config
* @return string
*/
public function rules_core_generate( $config ) {
switch ( true ) {
case Util_Environment::is_apache():
case Util_Environment::is_litespeed():
return $this->rules_core_generate_apache( $config );
case Util_Environment::is_nginx():
return $this->rules_core_generate_nginx( $config );
}
return '';
}
private function site_uri() {
$site_uri = rtrim( network_site_url( '', 'relative' ), '/' ) . '/';
/* There is a bug in WP where network_home_url can return
* a non-relative URI even though scheme is set to relative.
*/
if ( Util_Environment::is_url( $site_uri ) ) {
$site_uri = parse_url( $site_uri, PHP_URL_PATH );
}
return $site_uri;
}
/**
* Generates rules
*
* @param Config $config
* @return string
*/
function rules_core_generate_apache( $config ) {
$cache_uri = Util_Environment::url_to_uri(
Util_Environment::filename_to_url( W3TC_CACHE_MINIFY_DIR ) ) . '/';
$site_uri = $this->site_uri();
/* There is a bug in WP where network_home_url can return
* a non-relative URI even though scheme is set to relative.
*/
if ( Util_Environment::is_url( $site_uri ) ) {
$site_uri = parse_url( $site_uri, PHP_URL_PATH );
}
$engine = $config->get_string( 'minify.engine' );
$browsercache = $config->get_boolean( 'browsercache.enabled' );
$brotli = ( $browsercache &&
$config->get_boolean( 'browsercache.cssjs.brotli' ) &&
!defined( 'W3TC_PAGECACHE_OUTPUT_COMPRESSION_OFF' ) );
$compression = ( $browsercache &&
$config->get_boolean( 'browsercache.cssjs.compression' ) &&
!defined( 'W3TC_PAGECACHE_OUTPUT_COMPRESSION_OFF' ) );
$rules = '';
$rules .= W3TC_MARKER_BEGIN_MINIFY_CORE . "\n";
$rules .= "\n";
$rules .= " RewriteEngine On\n";
$rules .= " RewriteBase " . $cache_uri . "\n";
if ( $engine == 'file' ) {
if ( $brotli ) {
$rules .= " RewriteCond %{HTTP:Accept-Encoding} br\n";
$rules .= " RewriteRule .* - [E=APPEND_EXT:_br]\n";
$rules .= " RewriteCond %{REQUEST_FILENAME}%{ENV:APPEND_EXT} -" . ( $config->get_boolean( 'minify.file.nfs' ) ? 'F' : 'f' ) . "\n";
$rules .= " RewriteRule (.*) $1%{ENV:APPEND_EXT} [L]\n";
}
if ( $compression ) {
$rules .= " RewriteCond %{HTTP:Accept-Encoding} gzip\n";
$rules .= " RewriteRule .* - [E=APPEND_EXT:_gzip]\n";
$rules .= " RewriteCond %{REQUEST_FILENAME}%{ENV:APPEND_EXT} -" . ( $config->get_boolean( 'minify.file.nfs' ) ? 'F' : 'f' ) . "\n";
$rules .= " RewriteRule (.*) $1%{ENV:APPEND_EXT} [L]\n";
}
if ( !$brotli && !$compression ) {
$rules .= " RewriteCond %{REQUEST_FILENAME} !-f\n";
}
}
$rules .= " RewriteRule ^(.+\\.(css|js))$ {$site_uri}index.php [L]\n";
$rules .= "\n";
$rules .= W3TC_MARKER_END_MINIFY_CORE . "\n";
return $rules;
}
/**
* Generates rules
*
* @param Config $config
* @return string
*/
function rules_core_generate_nginx( $config ) {
$cache_uri = Util_Environment::url_to_uri(
Util_Environment::filename_to_url( W3TC_CACHE_MINIFY_DIR ) ) . '/';
$first_regex_var = '$1';
// for subdir - need to count subdir in url
if ( Util_Environment::is_wpmu() && !Util_Environment::is_wpmu_subdomain() ) {
// take into accont case when whole subdir wpmu is installed in subdir
$home_uri = network_home_url( '', 'relative' );
if ( substr( $cache_uri, 0, strlen( $home_uri ) ) == $home_uri )
$cache_uri = $home_uri . '([a-z0-9]+/)?' .
substr( $cache_uri, strlen( $home_uri ) );
else
$cache_uri = '(/[a-z0-9]+)?' . $cache_uri;
$first_regex_var = '$2';
}
$minify_uri = $this->site_uri();
$engine = $config->get_string( 'minify.engine' );
$browsercache = $config->get_boolean( 'browsercache.enabled' );
$brotli = ( $browsercache &&
$config->get_boolean( 'browsercache.cssjs.brotli' ) &&
!defined( 'W3TC_PAGECACHE_OUTPUT_COMPRESSION_OFF' ) );
$compression = ( $browsercache &&
$config->get_boolean( 'browsercache.cssjs.compression' ) &&
!defined( 'W3TC_PAGECACHE_OUTPUT_COMPRESSION_OFF' ) );
$rules = '';
$rules .= W3TC_MARKER_BEGIN_MINIFY_CORE . "\n";
if ( $engine == 'file' ) {
$rules .= "set \$w3tc_enc \"\";\n";
if ( $brotli ) {
$rules .= "if (\$http_accept_encoding ~ br) {\n";
$rules .= " set \$w3tc_enc _br;\n";
$rules .= "}\n";
}
if ( $compression ) {
$rules .= "if (\$http_accept_encoding ~ gzip) {\n";
$rules .= " set \$w3tc_enc _gzip;\n";
$rules .= "}\n";
}
$rules .= "if (-f \$request_filename\$w3tc_enc) {\n";
$rules .= " rewrite (.*) $1\$w3tc_enc break;\n";
$rules .= "}\n";
}
$rules .= "rewrite ^$cache_uri {$minify_uri}index.php last;\n";
$rules .= W3TC_MARKER_END_MINIFY_CORE . "\n";
return $rules;
}
/*
* cache rules
*/
/**
* Writes directives to file cache .htaccess
* Throws exception on error
*
* @param Config $config
* @param Util_Environment_Exceptions $exs
*/
private function rules_cache_add( $config, $exs ) {
Util_Rule::add_rules( $exs,
Util_Rule::get_minify_rules_cache_path(),
$this->rules_cache_generate( $config ),
W3TC_MARKER_BEGIN_MINIFY_CACHE,
W3TC_MARKER_END_MINIFY_CACHE,
array(
W3TC_MARKER_BEGIN_PGCACHE_CACHE => 0,
W3TC_MARKER_BEGIN_BROWSERCACHE_CACHE => 0,
W3TC_MARKER_BEGIN_MINIFY_CORE => 0,
W3TC_MARKER_BEGIN_PGCACHE_CORE => 0,
W3TC_MARKER_BEGIN_WORDPRESS => 0
)
);
}
/**
* Removes Page Cache core directives
*
* @param Util_Environment_Exceptions $exs
* @throws Util_WpFile_FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
*/
private function rules_cache_remove( $exs ) {
// apache's cache files are not used when core rules disabled
if ( !Util_Environment::is_nginx() )
return;
Util_Rule::remove_rules( $exs,
Util_Rule::get_minify_rules_cache_path(),
W3TC_MARKER_BEGIN_MINIFY_CACHE,
W3TC_MARKER_END_MINIFY_CACHE );
}
/**
* Generates directives for file cache dir
*
* @param Config $config
* @return string
*/
private function rules_cache_generate( $config ) {
switch ( true ) {
case Util_Environment::is_apache():
case Util_Environment::is_litespeed():
return $this->rules_cache_generate_apache( $config );
case Util_Environment::is_nginx():
return $this->rules_cache_generate_nginx( $config );
}
return '';
}
/**
* Generates directives for file cache dir
*
* @param Config $config
* @return string
*/
private function rules_cache_generate_apache( $config ) {
$browsercache = $config->get_boolean( 'browsercache.enabled' );
$brotli = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.brotli' ) );
$compression = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.compression' ) );
$expires = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.expires' ) );
$lifetime = ( $browsercache ? $config->get_integer( 'browsercache.cssjs.lifetime' ) : 0 );
$cache_control = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.cache.control' ) );
$etag = ( $browsercache && $config->get_integer( 'browsercache.html.etag' ) );
$w3tc = ( $browsercache && $config->get_integer( 'browsercache.cssjs.w3tc' ) );
$compatibility = $config->get_boolean( 'pgcache.compatibility' );
$rules = '';
$rules .= W3TC_MARKER_BEGIN_MINIFY_CACHE . "\n";
// workaround for .gzip
if ( $compatibility ) {
$rules .= "Options -MultiViews\n";
}
if ( $etag ) {
$rules .= "FileETag MTime Size\n";
}
if ( $brotli ) {
$rules .= "\n";
$rules .= " AddType text/css .css_br\n";
$rules .= " AddEncoding br .css_br\n";
$rules .= " AddType application/x-javascript .js_br\n";
$rules .= " AddEncoding br .js_br\n";
$rules .= "\n";
$rules .= "\n";
$rules .= " \n";
$rules .= " SetEnvIfNoCase Request_URI \\.css_br$ no-brotli\n";
$rules .= " SetEnvIfNoCase Request_URI \\.js_br$ no-brotli\n";
$rules .= " \n";
$rules .= "\n";
}
if ( $compression ) {
$rules .= "\n";
$rules .= " AddType text/css .css_gzip\n";
$rules .= " AddEncoding gzip .css_gzip\n";
$rules .= " AddType application/x-javascript .js_gzip\n";
$rules .= " AddEncoding gzip .js_gzip\n";
$rules .= "\n";
$rules .= "\n";
$rules .= " \n";
$rules .= " SetEnvIfNoCase Request_URI \\.css_gzip$ no-gzip\n";
$rules .= " SetEnvIfNoCase Request_URI \\.js_gzip$ no-gzip\n";
$rules .= " \n";
$rules .= "\n";
}
if ( $expires ) {
$rules .= "\n";
$rules .= " ExpiresActive On\n";
$rules .= " ExpiresByType text/css A" . $lifetime . "\n";
$rules .= " ExpiresByType application/x-javascript A" . $lifetime . "\n";
$rules .= "\n";
}
if ( $w3tc || $brotli || $compression || $cache_control ) {
$rules .= "\n";
if ( $w3tc ) {
$rules .= " Header set X-Powered-By \"" .
Util_Environment::w3tc_header() . "\"\n";
}
if ( $brotli || $compression ) {
$rules .= " Header set Vary \"Accept-Encoding\"\n";
}
if ( $cache_control ) {
$cache_policy = $config->get_string( 'browsercache.cssjs.cache.policy' );
switch ( $cache_policy ) {
case 'cache':
$rules .= " Header set Pragma \"public\"\n";
$rules .= " Header set Cache-Control \"public\"\n";
break;
case 'cache_public_maxage':
$rules .= " Header set Pragma \"public\"\n";
if ( $expires ) {
$rules .= " Header append Cache-Control \"public\"\n";
} else {
$rules .= " Header set Cache-Control \"max-age=" . $lifetime . ", public\"\n";
}
break;
case 'cache_validation':
$rules .= " Header set Pragma \"public\"\n";
$rules .= " Header set Cache-Control \"public, must-revalidate, proxy-revalidate\"\n";
break;
case 'cache_noproxy':
$rules .= " Header set Pragma \"public\"\n";
$rules .= " Header set Cache-Control \"private, must-revalidate\"\n";
break;
case 'cache_maxage':
$rules .= " Header set Pragma \"public\"\n";
if ( $expires ) {
$rules .= " Header append Cache-Control \"public, must-revalidate, proxy-revalidate\"\n";
} else {
$rules .= " Header set Cache-Control \"max-age=" . $lifetime . ", public, must-revalidate, proxy-revalidate\"\n";
}
break;
case 'no_cache':
$rules .= " Header set Pragma \"no-cache\"\n";
$rules .= " Header set Cache-Control \"max-age=0, private, no-store, no-cache, must-revalidate\"\n";
break;
}
}
$rules .= "\n";
}
$rules .= W3TC_MARKER_END_MINIFY_CACHE . "\n";
return $rules;
}
/**
* Generates directives for file cache dir
*
* @param Config $config
* @return string
*/
private function rules_cache_generate_nginx( $config ) {
$cache_uri = Util_Environment::url_to_uri(
Util_Environment::filename_to_url( W3TC_CACHE_MINIFY_DIR ) ) . '/';
$browsercache = $config->get_boolean( 'browsercache.enabled' );
$brotli = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.brotli' ) );
$gzip = ( $browsercache && $config->get_boolean( 'browsercache.cssjs.compression' ) );
$rules = '';
$rules .= W3TC_MARKER_BEGIN_MINIFY_CACHE . "\n";
$common_rules_a = Dispatcher::nginx_rules_for_browsercache_section(
$config, 'cssjs', true );
$common_rules_a[] = 'add_header Vary "Accept-Encoding";';
$common_rules = ' ' . implode( "\n ", $common_rules_a ) . "\n";
if ( $brotli ) {
$rules .= "location ~ " . $cache_uri . ".*js_br$ {\n";
$rules .= " brotli off;\n";
$rules .= " types {}\n";
$rules .= " default_type application/x-javascript;\n";
$rules .= " add_header Content-Encoding br;\n";
$rules .= $common_rules;
$rules .= "}\n";
$rules .= "location ~ " . $cache_uri . ".*css_br$ {\n";
$rules .= " brotli off;\n";
$rules .= " types {}\n";
$rules .= " default_type text/css;\n";
$rules .= " add_header Content-Encoding br;\n";
$rules .= $common_rules;
$rules .= "}\n";
}
if ( $gzip ) {
$rules .= "location ~ " . $cache_uri . ".*js_gzip$ {\n";
$rules .= " gzip off;\n";
$rules .= " types {}\n";
$rules .= " default_type application/x-javascript;\n";
$rules .= " add_header Content-Encoding gzip;\n";
$rules .= $common_rules;
$rules .= "}\n";
$rules .= "location ~ " . $cache_uri . ".*css_gzip$ {\n";
$rules .= " gzip off;\n";
$rules .= " types {}\n";
$rules .= " default_type text/css;\n";
$rules .= " add_header Content-Encoding gzip;\n";
$rules .= $common_rules;
$rules .= "}\n";
}
$rules .= W3TC_MARKER_END_MINIFY_CACHE . "\n";
return $rules;
}
public function w3tc_browsercache_rules_section( $section_rules, $config, $section ) {
if ( Util_Environment::is_litespeed() ) {
$o = new Minify_Environment_LiteSpeed( $config );
$section_rules = $o->w3tc_browsercache_rules_section(
$section_rules, $section );
}
return $section_rules;
}
}