apt-get install lighttpd php5-cgi
 
echo cgi.fix_pathinfo = 1 >> /etc/php5/cgi/php.ini

/etc/lighttpd/lighttpd.conf

#přidat modul
  "mod_fastcgi",
 
#přidat na konec
  fastcgi.server = ( ".php" => ((
  "bin-path" => "/usr/bin/php5-cgi",
  "socket" => "/tmp/php.socket"
  )))

restartovat

/etc/init.d/lighttpd restart