A PHP script that will allow visitors of a website to enter a username and password on a simple html page, and download a specific file for each username/password combination

Hi, i will need the following: A PHP script that will allow visitors of a website to enter a username and password on a simple html page, and download a specific file for each username/password combination. The structure is: ---------------------- -Username/password file -PHP script file -Folder with multiple PDF files -form HTML file ---------------------- For the example: ---------------------- User: JohnDoe Password: pass123 PDF file: [login to view URL] ---------------------- The password file should contain username and password combinations in the following format: JohnDoe:pass123 -Each line in the password file contains a different username/password. -The username is the pdf filename, without the .pdf extension. -Downloading should be allowed only with the username and password, not a direct link (for example, via file permissions or link obscuring etc, whatever is easier for you). -The HTML has to have the bare minimums, two fields for the username and password and a submit button. -If the visitor enters a correct user/pass combination, the respective file will be downloaded. -If the visitor enters a wrong user/pass combination, a "wrong username or password combination" is shown on the page. -The PHP script and password file have to NOT be accessible by the public, but only by the server (as mentioned above, the PDF files should be downloadable but not via direct link, only by entering username and password) -Your bid on the project = the amount of payment. -Milestone before complete payment is a successful demo, before providing the files. Thank you for your time!