How can users troubleshoot access denied errors like "#1045 - Access denied for user 'root'@'localhost' (using password: NO)" when using PHPAdmin?

The access denied error "#1045 - Access denied for user 'root'@'localhost' (using password: NO)" typically occurs when PHPAdmin is unable to authenticate the user 'root' with the provided password. To troubleshoot this issue, ensure that the correct username and password are used in the PHPAdmin configuration file. Additionally, check if the user 'root' has the necessary privileges to access the database.

$servername = "localhost";
$username = "root";
$password = "your_password";
$dbname = "your_database";

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

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