What is the difference between including PHP files and text files in PHP code?

When including PHP files in PHP code, the contents of the included file are executed as PHP code, allowing for the execution of functions, classes, and variables defined in the included file. On the other hand, when including text files in PHP code, the contents of the included file are treated as plain text and are not executed as PHP code. To include a PHP file in PHP code, you can use the `include` or `require` statement followed by the path to the PHP file. To include a text file in PHP code, you can use the `file_get_contents` function to read the contents of the text file.

// Including a PHP file
include 'path/to/file.php';

// Including a text file
$text = file_get_contents('path/to/textfile.txt');
echo $text;