     <?php
     $servername = "localhost"; 
     $username = "root";
     $password = "******";
     $dbname = "my_DB";
     // Создаём соединение
     $conn = new mysqli($servername, $username, $password, $dbname);
     // Проверим подключение
     if ($conn->connect_error) {
       die("Ошибка соединения: " . $conn->connect_error);
     }
     // sql to delete a record
     $sql = "DELETE FROM MyGuests WHERE id=5";

     if ($conn->query($sql) === TRUE) {
      echo "Record deleted successfully";
     } else {
     echo "Error deleting record: " . $conn->error;
     }
     // Закроем соединение
     $conn->close();
     ?>