How can separating the query from the output and using objects improve the code for passing variables between PHP and JavaScript?

Separating the query from the output and using objects can improve the code for passing variables between PHP and JavaScript by creating a structured and organized way to handle data. By storing the query results in an object, you can easily pass it to JavaScript using JSON encoding. This approach makes the code more maintainable and scalable, as it separates concerns and allows for easier manipulation of the data on both the PHP and JavaScript sides.

// Perform a database query
$query = "SELECT * FROM users";
$result = mysqli_query($conn, $query);

// Store query results in an object
$users = array();
while ($row = mysqli_fetch_assoc($result)) {
    $users[] = $row;
}

// Encode the object as JSON and pass it to JavaScript
echo '<script>';
echo 'var users = ' . json_encode($users) . ';';
echo '</script>';