In PHP, what are the advantages of passing specific values as parameters to functions instead of relying on global variables or arrays?

Passing specific values as parameters to functions instead of relying on global variables or arrays helps improve code readability, maintainability, and reusability. It makes functions more self-contained and reduces dependencies on external variables, leading to more predictable behavior and easier debugging. Additionally, passing parameters allows for better control over the input values, making functions more flexible and adaptable to different scenarios.

// Using parameters to pass specific values to a function

function calculateTotal($price, $quantity) {
    return $price * $quantity;
}

$total = calculateTotal(10, 5);
echo "Total: $total";