Koneksi PHP

<?php
// connect ke database
    $DB_HOST = "localhost";
    $DB_DATABASE = "daftar_piutang";
    $DB_USERNAME = "root";
    $DB_PASSWORD = "";

    // create connection
    $conn = new mysqli($DB_HOST, $DB_USERNAME, $DB_PASSWORD, $DB_DATABASE);

    // check connection
    if($conn->connect_error){
        die('Connection failed:' .$conn->connect_error);
    }
    else{
      // echo "connection success";
    }
?>