What are some best practices for handling empty arrays and preventing division by zero errors in PHP functions?

When dealing with empty arrays in PHP functions, it's important to check if the array is empty before performing operations on it to prevent errors. Similarly, to prevent division by zero errors, always ensure the denominator is not zero before performing division operations. You can use conditional statements to handle these scenarios gracefully and avoid runtime errors. 

// Handling empty arrays
function calculateAverage($numbers) {
    if (empty($numbers)) {
        return 0; // return 0 or handle the empty array case accordingly
    }

    // Perform average calculation
    $sum = array_sum($numbers);
    $count = count($numbers);
    return $sum / $count;
}

// Preventing division by zero errors
function divideNumbers($numerator, $denominator) {
    if ($denominator == 0) {
        return 0; // return 0 or handle the division by zero case accordingly
    }

    return $numerator / $denominator;
}

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