How can basic PHP fundamentals be applied to improve the clarity and functionality of code examples for beginners?

Beginners often struggle with understanding complex PHP code examples. To improve clarity and functionality, it's essential to break down the code into smaller, more digestible chunks, use meaningful variable names, and provide comments to explain the purpose of each section.

// Example of using basic PHP fundamentals to improve code clarity for beginners

// Define variables with meaningful names
$firstNumber = 10;
$secondNumber = 5;

// Perform a simple addition operation
$sum = $firstNumber + $secondNumber;

// Output the result
echo "The sum of $firstNumber and $secondNumber is: $sum";