<?php
    require_once("conn.php");
    $dbc = mysqli_connect(HOST,USER,PASS,DBN)
            or die ("connected error");
    $query = "SELECT * FROM `signin` WHERE stuNum='$stuNum' AND secretword='$password'";
    $result = mysqli_query($dbc,$query)
            or die ("quering error");
    $row = mysqli_num_rows($result);
    mysqli_close($dbc);
?>