Getting wrong $_SERVER[‘SERVER_NAME’] on Nginx PHP5-FPM

I was testing some old code that used $_SERVER[‘SERVER_NAME’] to get the sub domain, but I was getting *  no matter what was the sub domain, so looking on the nginx site config file on the php section had and include

location ~ \.php$ {
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
include fastcgi_params; #<-- includes fastcgi paramters file
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_intercept_errors off;
fastcgi_buffer_size 16k;
fastcgi_buffers 4 16k;

which calls a file /etc/nginx/fastcgi_params

On the file I found the problem, nginx send as SERVER_NAME parameter the $server_name var, which in this case because we use wildcards will trigger *  and that’s why the nginx variable get $server_name get that domain

To fix this problem I just comment that $server_name and use the $http_host variable.

fastcgi_param  SERVER_NAME        $http_host; #$server_name;

Restart nginx and test

sudo service nginx restart


400 Bad Request – request header or cookie too large

I was getting this error on heavy usage Cookie App in nginx, so looking at nginx documation, found the solution


you can go global or site specific, because large_client_header_buffers. it’s only valid in http or server contexts,

so for only site specific I went server way

sudo nano /etc/nginx/sites-enabled/

Add this line on your server context

large_client_header_buffers 4 16k;

you can play with size of the client buffer, I need only 4 16k , default is  4 8k

restart nginx and test

sudo service nginx restart


How to remove Skype Ads

It is really easy to block Ads on Skype,  we only need to restrict two domains and that’s all.

So lets start

Control Panel

Open your control panel window then click on Network and Internet then on Internet Options, Click on the Security tab and finally click on Restricted sites, you will see a Sites button, click it and add this two domains

Restricted Sites Sites


Press Close and now we need to remove the Place Holder where the Ads is

Remove the Ad Placeholder

Press Win Key + R  and type %appdata% and then click Skype and look for your for a folder with your Skype name in there you should see a file named config.xml open it with your favorite editor, I recommend Sublime or Notepad++ search for AdvertPlaceholder and change the 1 to 0 save and exit there you have it , restart your Skype and there should be no more Ads!

RunOpen with sublimeChange AdvertPlaceholder to 0