How can developers ensure that their PHP code documentation remains up-to-date and accurate over time?

Developers can ensure that their PHP code documentation remains up-to-date and accurate by incorporating documentation updates as part of their regular development process. This can involve setting aside time to review and update documentation whenever code changes are made, using tools like PHPDocumentor to automatically generate documentation from code comments, and encouraging team members to contribute to and review documentation regularly.

/**
 * This function calculates the sum of two numbers.
 *
 * @param int $num1 The first number to add.
 * @param int $num2 The second number to add.
 * @return int The sum of the two numbers.
 */
function calculateSum($num1, $num2) {
    return $num1 + $num2;
}