sistem login gagal trus, pdahal sudah sesuai di database.

ini function nya :

function cek_data($nama, $pass){
      global $conn;

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

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

    //  die( print_r($hash));

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

login.php nya :

<?php
  require_once "core/init.php";

  //validati register
  if ( isset($_POST['submit']) ) {
    $nama  = $_POST['username'];
    $pass  = $_POST['password'];

    if (!empty(trim($nama)) && !empty(trim($pass)) ) {

       cek_data($nama, $pass);

    }else {
      echo 'tidak boleh kosong';
    }
  }

  require_once "view/header.php";
 ?>