By using below code you can connect the database with PHP application. After database connection we can access all database and also we can CRUD operation by using PHP application.


$servername = "localhost";
$username = "username";
$password = "password";
// Create connection
$conn = new mysqli($servername, $username, $password);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";