Implementing Bitwise Permissions

Table of content

• Folder Structure
• Database Structure
  • bw_users
  • bw_actions
  • bw_groups
• Table Data
• db.php
• user.php
• Main Page
• Conclusion

Reader Freddy requested a tutorial about implementing bitwise permissions in real application. This tutorial will cover that. It’s very simple tutorial and I tried to make it as simple as possible.

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Permissions Using Bitwise

Table of content

• Bitwise operators
  • How do they work?
  • And operator (`&`)
  • Or operator (`|`)
  • Not operator (`~`)
• Defining permissions
• Create user classes
• Check if user can
• Test all roles and permissions

This will be a quick tutorial on how to use bitwise operators in PHP to create permissions control. Some of next tutorials will cover how to implement it in application and how to use database to store permissions for users. Now some basics.

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Advanced PHP User Login

Table of content

• What is TAN?
• Set up
• Markup and CSS
• Config and database connection
• AJAX Submit
• Validate Log In
• Creating new user
• Conclusion

If you ever had a bank account you are familiar with TAN-s (Transaction Authentication Number). What we will do today, is create user login using that kind of system. This will be just simple overview how to do it so you can create more complex and secure login systems. You need to have basic knowledge about classes, HTML, CSS and AJAX because I will not explain in depth what I do.

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PHP Antispam

Today web programmers have big problems with spam comments. There are a lot of tutorials about captchas and how to implement them, so I will not cover it here (I can do it f next tutorial if you wish). Anyway, I will show you some other methods that are good. Note that none of them is not 100% secure.

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