Why is it important to close MySQL connections using mysql_close in PHP scripts?

It is important to close MySQL connections using mysql_close in PHP scripts to free up resources and prevent potential memory leaks. Failing to close connections can lead to performance issues and may cause the server to reach its connection limit. By explicitly closing connections, you ensure that resources are released properly and improve the overall efficiency of your script.

// Open a connection to the MySQL database
$connection = mysql_connect("localhost", "username", "password");

// Check if the connection was successful
if (!$connection) {
    die("Connection failed: " . mysql_error());
}

// Perform database operations here

// Close the MySQL connection
mysql_close($connection);