"web page:change prices" accessed via a password only and not directly by anyway ?

[leonidassavvides]

If I want to build an admin area, to change prices the customer for his RentACar website what to do so this "web page:change prices" accessed via a password only and not directly by anyway ? I already have a secure booking system for the website(https://) ?

[Nile]

What do you want, something like a .htaccess, it will have a prompt asking for any file you try to access that has the .htaccess in it. Or do you want like an input box for password and user?

[leonidassavvides]

I just want the page access via id/password (login.php) page eg admin.php to be not directly accessed http://www.website.com/admin.php but only though id/password ? what to program on admin.php ?