mysql  Ver 14.14 Distrib 5.7.16
PHP 7.1.0-5+deb.sury.org~xenial+1

<?php
        $servername = "localhost";
        $username = "root";
        $password = "password";
        echo "yess";
        // Create connection
        $conn = new mysqli($servername, $username, $password,"loginsystem");
        echo "hw";
        // Check connection
        if ($conn->connect_error) {
            die("Connection failed: " . $conn->connect_error);
        }
        echo "Connected succesfully";
 ?>