error_reporting(-1);

ini_set('display_errors','On');

//the login credentials for the database

$db_hostname = 'localhost';

$db_database = 'car';

$db_username = 'root';

$db_password = '';

$link = mysqli_connect($db_hostname, $db_database, $db_username, $db_password);

if (!$link) die("Unable to connect to MySQL: " . mysqli_connect_error());

//selecting the database a die statement terminates the program

$db_selected = mysqli_select_db($link, $db_database)

or die("Unable to select database: " . mysqli_error());

?>

this is the error though wamp

Unable to connect to MySQL: Access denied for user 'car'@'localhost' (using password: YES)