Are there any performance considerations to keep in mind when deciding whether to manually close a database connection in PHP after retrieving data from multiple tables?

When retrieving data from multiple tables in PHP, it is important to consider the performance impact of leaving database connections open. Manually closing the database connection after retrieving data can help improve performance by releasing resources and preventing potential bottlenecks. It is best practice to close the database connection once the data has been fetched to optimize the use of resources and improve overall application performance. 

// Retrieve data from multiple tables
// Close the database connection after fetching data

// Establish a database connection
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Fetch data from multiple tables
// Your data retrieval code here

// Close the database connection
$conn->close();

Keywords

database connection PHP performance multiple tables close connection

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