Is db->close necessary in PHP scripts?

In PHP scripts, it is not always necessary to explicitly close the database connection using db->close. PHP automatically closes the database connection when the script finishes executing. However, it is considered good practice to explicitly close the database connection to free up resources and ensure proper cleanup. If your script is making multiple database connections or running for an extended period, it is recommended to explicitly close the connection. 

// Open a database connection
$db = new mysqli('localhost', 'username', 'password', 'database');

// Perform database operations

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

Keywords

db->close PHP scripts database connection resource management memory optimization

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