Server – side Technologies PHP for web dev.pptx
- 1. Server – side Technologies Server-side scripting language (PHP) MARIO B. CADAY Instructor I
- 2. INTRODUCTION PHP (Hypertext Preprocessor) is a widely- used, open-source scripting language that is especially suited for web development. It is executed on the server, meaning that PHP scripts are processed by the server and the result is sent to the client (usually in the form of HTML).
- 3. Key Features of PHP: • Open Source: PHP is free to download and use. • Server-Side Scripting: PHP scripts run on a web server, enabling the development of dynamic websites that interact with databases and handle forms. • Cross-Platform: PHP works on all major operating systems like Windows, Linux, and macOS. • Embedded in HTML: PHP can be easily embedded into HTML code, making it flexible for developers. • Interacts with Databases: PHP supports a wide range of databases, including MySQL, PostgreSQL, Oracle, and many others.
- 4. Applications of PHP: • Dynamic Web Pages: PHP can create dynamic content, like retrieving information from databases. • Form Handling: PHP allows websites to handle data submitted by users through forms. • Content Management Systems (CMS): Popular CMS platforms like WordPress, Joomla, and Drupal are built using PHP. • E-commerce: Many e-commerce platforms like Magento and OpenCart are PHP-based.
- 5. Basic PHP Syntax: •A PHP script starts with <?php and ends with ?>. Here’s a simple example of a PHP script that outputs "Hello, World!":
- 6. Why Use PHP? • Simplicity: PHP is relatively easy to learn for beginners, especially for those with basic knowledge of HTML. • Large Community and Support: Being popular for over two decades, PHP has extensive documentation and a large community of developers. • Scalability: PHP can handle simple websites to large- scale enterprise applications efficiently. • PHP continues to be a relevant tool in web development, especially for server-side programming.
- 7. CREATING LOGIN FUNCTIONALITY •Creating a login system using PHP is a common task in web development. Below is a basic example of how to build a simple PHP login system. It includes a form for users to enter their credentials, checks the credentials against stored values (in a database), and logs the user in if they are correct.
- 8. Prerequisites: •Basic knowledge of HTML, PHP, and SQL. •A database (e.g., MySQL) to store user credentials.
- 9. Create the Database and Table
- 11. Fill in the textbox example ‘login_system’ Then click create
- 12. Create table ‘users’ then click Go button
- 13. Set user_id in the text field and make sure to check the Auto increment (A_I) checkbox Set type to VARCHAR and set the length/Values to 255 THEN Click Save button
- 14. Click insert Tab Set username and password Example Username: test@gmail.com Password: test12345 Then Click Go Button
- 15. Login form HTML
- 17. Checking form query from users table
- 18. In PHP, bind parameters are used to safely execute SQL queries with prepared statements, which help prevent SQL injection attacks.
- 20. Session start()
- 21. END
- 24. Login Session