What are the potential pitfalls of storing query results in variables in PHP?

Storing query results in variables in PHP can lead to potential pitfalls such as increased memory usage, potential data inconsistency if the database is updated, and the risk of outdated information being displayed. To solve this issue, it is recommended to fetch the data directly from the database each time it is needed to ensure the most up-to-date information is being used.

// Fetch data directly from the database each time it is needed
$query = "SELECT * FROM table_name WHERE condition";
$result = mysqli_query($connection, $query);

// Use the fetched data directly without storing it in a variable
while ($row = mysqli_fetch_assoc($result)) {
    // Process the data
}