Blocking your application root files access from outer world and accessible for particular user.

For the security reason it is important to secure your root files from outer world as a webmaster. Just follow below steps..
Open .htaccess file and edit as below
AuthType Basic
AuthName “Password Required”
AuthUserFile C:\xampp\htdocs\ Application_folder_name\.htpasswd
Require user webpro

Open cmd prompt create .htpasswd file

C:\Users\moshiur.rahman\xampp\apache\bin>htpasswd -c c:\Users\moshiur.rahman\xam
pp\htdocs\Billing\.htpasswd webpro
Automatically using MD5 format.
New password: ******
Re-type new password: ******
Adding password for user webpro

Finally you can see a .htpasswd file created with encrypted password for webpro

webpro:$apr1$aRU90GIL$u8FEMMi1NH/q.JpDUuuhN.