login php

//untuk login
    function cek_data($nama,$pass){
        global $link;

            //mencegah sql injection
            $nama = mysqli_real_escape_string($link, $nama);
            $pass = mysqli_real_escape_string($link, $pass);

            $query = "SELECT password FROM users WHERE username='$nama'";
            $result = mysqli_query($link, $query);
            $hash   = mysqli_fetch_assoc($result)['password'];

            print_r($hash);

            // while ($data = mysqli_fetch_assoc($result)) {
            //  echo $data['password'];
            // }

        if( password_verify($pass, $hash) ){
            die('berhasil');
        }else{
            die('gagal');
        }

    }