Is it necessary to manually close database connections in PHP, or does PHP handle it automatically?

It is generally recommended to manually close database connections in PHP to ensure that resources are properly released and to prevent potential memory leaks. While PHP does handle closing connections automatically at the end of the script execution, explicitly closing connections can help improve performance and avoid issues with reaching the maximum number of connections allowed by the database server.

// Connect to the database
$connection = mysqli_connect("localhost", "username", "password", "database");

// Perform database operations

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