Erorr saat menampilkan data

saya mau bertanya ini kira-kira erorr kenapa ya mungkin agan-agan bisa membantu:

Fatal error: Uncaught Error: Call to undefined function mysqli_result() in C:\xampp\htdocs\aplikasi_penjualan_php_mysql-master\admin\barang.php:27 Stack trace: #0 {main} thrown in

C:\xampp\htdocs\aplikasi_penjualan_php_mysql-master\admin\barang.php on line 27

ini kode php nya

<?php
$per_hal=10;
$jumlah_record=mysqli_query($conn,"SELECT COUNT(*) from barang");
$jum=mysqli_result($jumlah_record, 0);
$halaman=ceil($jum / $per_hal);
$page = (isset($_GET['page'])) ? (int)$_GET['page'] : 1;
$start = ($page - 1) * $per_hal;
?>