Fatal error: call to undefined function mysqli_result()

See more:

SQL

include("dbinfo.inc.php");
$conn = mysqli_connect($serv, $username, $password,$database)or die("cannot connect");
mysqli_select_db($conn,$database) or die( "Unable to select database");

<?
while ($i < $num) {
$cname=mysqli_result($result,$i,"NAME");
$cid=mysqli_result($result,$i,"ID");
echo "<option value=\"" . $cid . "\">" . $cname . "</option>";
$i++;
}
?>
</select>
<select name="id2">

<?
$i=0;
while ($i < $num) {
$cname=mysqli_result($result,$i,"NAME");
$cid=mysqli_result($result,$i,"ID");
echo "<option value=\"" . $cid . "\">" . $cname . "</option>";
$i++;
}
mysqli_close();
?>
</select>
<input type="submit" value="Submit" /></form><br>

Could you please tell me what do i need to change here in order to see my content properly ? Thank you.

What I have tried:

I have tried all versions of php