How can the PHP script be improved for better efficiency and readability?

Issue: The PHP script can be improved for better efficiency and readability by using functions to encapsulate repetitive code blocks and improve code organization. 

// Original PHP script
$number1 = 10;
$number2 = 20;

// Calculate the sum
$sum = $number1 + $number2;
echo "Sum: " . $sum . "<br>";

// Calculate the difference
$diff = $number1 - $number2;
echo "Difference: " . $diff . "<br>";

// Calculate the product
$prod = $number1 * $number2;
echo "Product: " . $prod . "<br>";
```

```php
// Improved PHP script using functions
function calculateSum($num1, $num2) {
    return $num1 + $num2;
}

function calculateDifference($num1, $num2) {
    return $num1 - $num2;
}

function calculateProduct($num1, $num2) {
    return $num1 * $num2;
}

$number1 = 10;
$number2 = 20;

// Calculate and display the sum
$sum = calculateSum($number1, $number2);
echo "Sum: " . $sum . "<br>";

// Calculate and display the difference
$diff = calculateDifference($number1, $number2);
echo "Difference: " . $diff . "<br>";

// Calculate and display the product
$prod = calculateProduct($number1, $number2);
echo "Product: " . $prod . "<br>";

Keywords

PHP optimization code refactoring performance tuning readability

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