php - How to add lock symbol to my website using private SSL in https pages - Webmasters Stack Exchange
Lockr - Lock Your Pages PHP Script by N3m | Codester
How do I force visitors of my site to always use HTTPS? – Support | one.com
Password protect your web pages by just adding one line of PHP code. Visitor will not have to re-login to each protected page if one has cookies enabled.
Use VeryUtils PHP Easy Lock to add password to protect PHP Script : r/veryutils
How to lock a file using PHP
Review Status Locks Page | Enterprise Architect User Guide