Practice Task: Creating a Modular PHP Script

Task Description:

Create a modular PHP script that includes multiple files and stores their return values in variables.
The script should contain comments and demonstrate different PHP statements.
You should use include, require, include_once, and require_once.

Specific Requirements:

Create PHP files:

• A main file (index.php) that includes the other files.

• Two additional files (config.php and functions.php) that are included by the main file.

• One file (data.php) that returns a value.

Comments in PHP:

• Use comments to document your code.

PHP Statements:

• Use different PHP statements such as variable assignments and function calls.

Include and Require:

• Use include and require to include the files.

Include_once and Require_once:

• Use include_once and require_once to ensure that files are included only once.

Store Return Value in a Variable:

• Include data.php and store the returned value in a variable.