Are there any PHP features or tools that can help with managing data type expectations in a more efficient way?

When managing data type expectations in PHP, one efficient way to ensure data types are handled correctly is to use PHP's type declaration feature. By specifying the expected data type for function parameters and return values, you can prevent unexpected data type errors and improve code clarity. Additionally, using PHP's built-in functions like `is_int()`, `is_string()`, and `is_array()` can help validate data types before processing them further.

function addNumbers(int $num1, int $num2): int {
    return $num1 + $num2;
}

$sum = addNumbers(5, 10);
echo $sum; // Output: 15