What function should be used to fetch a result row as an associative array in PHP?

To fetch a result row as an associative array in PHP, you should use the `mysqli_fetch_assoc()` function if you are using MySQLi for database operations. This function fetches a single row from the result set returned by a query and returns it as an associative array where the keys are the column names. Example PHP code snippet:

// Assume $result is the result set returned by a query
$row = mysqli_fetch_assoc($result);

// Now $row is an associative array containing the data of the fetched row
// You can access the values using column names as keys, for example $row['column_name']