<?php
    include_once 'includes/dhb.inc.php';
    $sql = "SELECT * FROM studentdb;";
    // code is working up to this point
    echo "hello";
    $result = mysqli_query($conn, $sql);
    echo "hello2";
    // code stops working at this point
    $resultCheck = mysqli_num_rows($result);
    //
    if ($resultCheck > 0) {
        while($row = mysqli_fetch_assoc($result)) {
            //do something
        }
    }
?>