gzip #php #server

README.MD

enable in apache/php

• this is done by default
• check via cat /etc/apache2/mods-available/deflate.conf

enable in iis

• Windows-Features aktivieren/deaktivieren
• Webserver (IIS) > Webserver > Leistung > Komprimieren dynamischer Inhalte
• IIS > nebro > Komprimierung > 2 Haken setzen

disable in .htaccess

# disable gzip compression on localhost
<IfModule mod_deflate.c>
    SetEnv no-gzip 1
</IfModule>

check in php

$url = 'http'.((isset($_SERVER['HTTPS'])&&$_SERVER['HTTPS']!=='off')?'s':'').'://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_ENCODING, '');
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
$response = curl_exec($ch);
curl_close($ch);
if (stripos($response, 'Content-Encoding: gzip') !== false) { echo 'on'; } else { echo 'off'; }

check via curl

• curl -i --compressed https://tld.com

check in chrome

• network > first request > check header Content-Encoding: gzip