server {
listen   80;
server_name  192.168.15.50;

# note that these lines are originally from the "location /" block
root   /home/sites;
index index.php index.html index.htm;

location / {
    index index.php;
try_files /$uri /$uri/ /index.php?url=$uri;
rewrite ^/(.*) /public/$1 break;        
}


error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
    root /home/sites;
}

location ~ \.php$ {
    try_files $uri =404;
    fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    include fastcgi_params;
}