How can developers ensure that their PHP scripts are PHP7.0 compatible, especially when using functions like mysqli_fetch_array?

To ensure that PHP scripts are PHP7.0 compatible, developers should avoid using deprecated functions and features. When using functions like mysqli_fetch_array, developers should switch to using mysqli_fetch_assoc or mysqli_fetch_row instead, as mysqli_fetch_array is not recommended for PHP7.0 compatibility.

// Instead of using mysqli_fetch_array, switch to using mysqli_fetch_assoc or mysqli_fetch_row
$result = mysqli_query($conn, $query);
while($row = mysqli_fetch_assoc($result)) {
    // Process each row
}