//$User = 'kv96';
//$Pass = 'passkv';

//echo isValidLogin($User, $Pass);


function isValidLogin($username, $password) {
    $query = mysqli_query($link,"SELECT * FROM Log_in WHERE Password = '$Pass' AND User_ID ='$User'"); //Finds the database and chooses the row
    //$result = mysqli_query($query);
    $row = mysqli_fetch_array($result); //Fetches the row
    if($row['User_ID'] != null && $row['Password'] != null){return true;}
    else{return false;}

function getUsernameRole($username) {
    return "instructor";
}
mysqli_close($link);
    ?>`enter code here`