How can the division by zero error be prevented in PHP scripts when performing calculations based on database query results?

Division by zero error can be prevented in PHP scripts by checking if the divisor is zero before performing the division operation. This can be done by using an if statement to verify if the divisor is not zero and only executing the division operation if it is safe to do so.

// Example PHP code snippet to prevent division by zero error
$dividend = 10;
$divisor = 0;

if($divisor != 0) {
    $result = $dividend / $divisor;
    echo "Result: " . $result;
} else {
    echo "Error: Division by zero is not allowed.";
}