What are the common pitfalls of using COPY and PASTE for code implementation in PHP scripts, and how can developers ensure code quality and accuracy in such scenarios?

Common pitfalls of using COPY and PASTE for code implementation in PHP scripts include duplication of code leading to maintenance issues, potential introduction of bugs if copied code is not modified correctly, and lack of consistency across the codebase. To ensure code quality and accuracy in such scenarios, developers should refactor duplicated code into reusable functions or classes, use include or require statements for shared code, and regularly review and update copied code to maintain consistency.

// Example of refactoring duplicated code into a reusable function
function calculateSum($num1, $num2) {
    return $num1 + $num2;
}

$number1 = 5;
$number2 = 10;
$result = calculateSum($number1, $number2);
echo "The sum is: " . $result;