How to set database connectivity in PHP?

Below is the code to set database connectivity

                                       //Servername , username , password
$connection = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$connection) {
die('Could not connect: ' . mysql_error());
}
echo 'Connected successfully';
mysql_close($connection);
?>

Hi Abhijeet,
Visit this link may help you
http://www.w3schools.com/Php/php_mysql_connect.asp
Please accept, if it helpful to you