nginx Проверка наличия файла

                if (-f $request_filename) {
                        fastcgi_pass   backend;
                }

location /ssylkanaphpmyadmin/ {
	alias /var/www/phpmyadmin/www/phpmyadmin/;
	try_files $uri =404;
	location ~ \.php$ {
		fastcgi_pass unix:/var/run/php5-fpm.sock;
		fastcgi_index index.php;
		include fastcgi_params;
		fastcgi_param SCRIPT_FILENAME $request_filename;
	}
}

user www-data;

worker_processes 2;

events {
        worker_connections 1024;
        multi_accept on;
	use epoll;
}

worker_rlimit_nofile 4096;

http {

	include /etc/nginx/mime.types;
	default_type text/html; 
	index index.php index.html index.htm;
	charset utf-8;
	sendfile on; 
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_timeout 60;
	reset_timedout_connection on;
        types_hash_max_size 2048;
        server_tokens off;
	client_max_body_size 100m;

	gzip on;
	gzip_min_length 1024;
	gzip_proxied any;
 	gzip_comp_level 5;
	gzip_types text/plain ext/html text/xml application/xml application/x-javascript text/javascript text/css text/json;
	gzip_disable "msie6";

	include /etc/nginx/conf.d/*.conf;
	include /etc/nginx/sites-enabled/*;

}

server {
	listen      443 ssl default_server;
	ssl_protocols       TLSv1 TLSv1.1 TLSv1.2;
	ssl_ciphers         AES128-SHA:AES256-SHA:RC4-SHA:DES-CBC3-SHA:RC4-MD5;
	ssl_certificate     /usr/local/nginx/conf/server.crt;
	ssl_certificate_key /usr/local/nginx/conf/server.key;

	server_name "";

	location / {
		return 444;
	}
	
	location /ssylkanaphpmyadmin/ {
		alias /var/www/phpmyadmin/www/phpmyadmin/;
		location ~ \.php$ {
			fastcgi_pass unix:/var/run/php5-fpm.sock;
       			fastcgi_index index.php;
       			include fastcgi_params;
       			fastcgi_param SCRIPT_FILENAME $request_filename;
		}
	}
}

                if (!-f $document_root$fastcgi_script_name) {
                        return 404;
                }
 

location ~ \.php$ {
                                if (!-f $document_root$fastcgi_script_name) {
                                        return 404;
                                }
                                fastcgi_pass unix:/var/run/php5-fpm.sock;
                                fastcgi_index index.php;
                                include fastcgi_params;
                                fastcgi_param SCRIPT_FILENAME $request_filename;
                        }

fastcgi_split_path_info ^(.+?\.php)(/.*)$;
if (!-f $document_root$fastcgi_script_name) {
    return 404;
}

                location /ssylkanaphpmyadmin/ {
                        alias /var/www/phpmyadmin/www/phpmyadmin/;
                        location ~ \.php$ {
                                if (!-f $request_filename) {
                                        return 404;
                                }
                                fastcgi_pass unix:/var/run/php5-fpm.sock;
                                fastcgi_index index.php;
                                include fastcgi_params;
                                fastcgi_param SCRIPT_FILENAME $request_filename;
                        }
                }