Is it necessary to close the database connection manually after storing the database "ID" as a session variable?

It is not necessary to manually close the database connection after storing the database "ID" as a session variable. PHP automatically closes the database connection when the script finishes execution. However, it is good practice to close the connection explicitly to free up resources and avoid potential issues in long-running scripts. 

// Store database ID as a session variable
$_SESSION['db_id'] = $db_id;

// Close the database connection
mysqli_close($connection);

Keywords

PHP database connection session variable close manual

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