How can you use the "order by" function in PHP to sort data in descending order?

To sort data in descending order using the "order by" function in PHP, you can simply add "DESC" after the column name in the SQL query. This will instruct the database to sort the data in descending order based on that column.

$query = "SELECT * FROM table_name ORDER BY column_name DESC";
$result = mysqli_query($connection, $query);

// Fetch and display the sorted data
while($row = mysqli_fetch_assoc($result)) {
    echo $row['column_name'] . "<br>";
}