How to enable gzip for yii2? - .htaccess

Question

I need to add new rules to .htaccess or to add the code to index.php of YII2?
My site is on shared hosting.
I want to compress only .css and .js files. I don't want to compress all responses.

Answer 1

You can make it work by attaching event handler on yii\web\Response in index.php.
$application = new yii\web\Application($config);
$application->on(yii\web\Application::EVENT_BEFORE_REQUEST, function(yii\base\Event $event){
$event->sender->response->on(yii\web\Response::EVENT_BEFORE_SEND, function($e){
ob_start("ob_gzhandler");
});
$event->sender->response->on(yii\web\Response::EVENT_AFTER_SEND, function($e){
ob_end_flush();
});
});
$application->run();

Answer 2

I added the following rules to .htaccess:
<IfModule mod_filter.c>
AddOutputFilterByType DEFLATE "application/atom+xml" \
"application/javascript" \
"application/json" \
"application/ld+json" \
"application/manifest+json" \
"application/rdf+xml" \
"application/rss+xml" \
"application/schema+json" \
"application/vnd.geo+json" \
"application/vnd.ms-fontobject" \
"application/x-font-ttf" \
"application/x-javascript" \
"application/x-web-app-manifest+json" \
"application/xhtml+xml" \
"application/xml" \
"font/eot" \
"font/opentype" \
"image/bmp" \
"image/svg+xml" \
"image/vnd.microsoft.icon" \
"image/x-icon" \
"text/cache-manifest" \
"text/css" \
"text/html" \
"text/javascript" \
"text/plain" \
"text/vcard" \
"text/vnd.rim.location.xloc" \
"text/vtt" \
"text/x-component" \
"text/x-cross-domain-policy" \
"text/xml"
</IfModule>
Configuration list: https://github.com/h5bp/server-configs