What are the best practices for optimizing performance when instantiating multiple classes in PHP for retrieving database table names?

When instantiating multiple classes in PHP for retrieving database table names, it's important to optimize performance by minimizing unnecessary database queries. One way to achieve this is by utilizing a singleton pattern to ensure only one instance of the database connection is used throughout the application, reducing overhead. Additionally, caching the table names in memory can help avoid redundant queries and improve overall performance. 

class Database {
    private static $instance;
    private $connection;

    private function __construct() {
        $this->connection = new PDO('mysql:host=localhost;dbname=mydatabase', 'username', 'password');
    }

    public static function getInstance() {
        if (!self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    public function getTableNames() {
        // Implement caching mechanism to store table names in memory
        // Example: $tableNames = ['table1', 'table2', 'table3'];
        return $tableNames;
    }
}

// Example usage
$db = Database::getInstance();
$tableNames = $db->getTableNames();

Keywords

PHP performance optimization class instantiation database tables naming conventions

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