For redirecting every request to SSL and WWW. Using php-fpm.

site.com.nginx.conf

server {
    listen      80;
    server_name site.com www.site.com;
    return 301 https://www.site.com$request_uri;
}

server {
        listen 443;
        listen [::]:443;
        ssl on;
        ssl_certificate /etc/ssl/SSL_certificate.crt;
        ssl_certificate_key /etc/ssl/SSL_certificate.key;

        server_name site.com;
        return 301 https://www.site.com$request_uri;
}

server {
        listen 443;
        listen [::]:443;
        ssl on;
        ssl_certificate /etc/ssl/SSL_certificate.crt;
        ssl_certificate_key /etc/ssl/ahsapatolyesi.key;

        server_name site.com www.site.com site.dev;

        root /var/www/site.com;

        index index.php index.html;

        location / {
                try_files $uri $uri/ =404;
        }
        location ~ \.php$ {
               include snippets/fastcgi-php.conf;
               fastcgi_pass unix:/run/php/php5.6-fpm.sock;
        }
}