What are the potential pitfalls of not properly freeing the result set in PHP after querying a database?

Not properly freeing the result set in PHP after querying a database can lead to memory leaks and potential performance issues, as the resources used by the result set are not released. To solve this issue, you should always free the result set after fetching the data by using the `mysqli_free_result()` function.

// Query the database
$result = mysqli_query($connection, "SELECT * FROM table");

// Fetch data from the result set
while ($row = mysqli_fetch_assoc($result)) {
    // Process the data
}

// Free the result set
mysqli_free_result($result);