<?php
mysql_connect("localhost","user","password") or exit("Fail To Connect.");
mysql_select_db("dbname") or exit("Fail To Connect.");
?>

<!-- Or Use This -->

<?php
	$servername = "localhost";
	$username = "user";
	$password = "password";
	$dbname = "dbname";

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

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