Question

I have a PHP page with 3 dropdownlists on it. Everytime with an ‘onchange’ event a javascript docs get’s the selected value’s and transfers it to a php function, where I can transfer them to my mysql-database and get results out of them. This thing works perfect, but not when I apply my logic to define which function I should call

My php page contains the effective logic (see code-box) and underneed there are the 2functions with the actions. The function do work, but the problem is this. There’s the possibility in the if-else construction that the functions can be called on 2 different moments. The first time in the if-else construction both of the calls are succesfull and the result is what it should be, the second moments it seems that the $result parameter is empty?

$result = mysql_query($sql) or die("Query failed with error: ".mysql_error());

$aantal = mysql_num_rows($result);
if($amount == 0){


echo "<p>This combination does not exist</p>";
    }
    else {
        // lists are empty
        if($soort == 'Empty' && $land == 'Empty' && $jaar == 'Empty'){
        }
        else {
            if ($aantal > 2){
                maketable($aantal, $result); // -> **succesfull call**
            }
            else if($aantal == 1){
                makedetails($result); // -> **succesfull call**
            }
            else {
                $first = mysql_result($result, 0);
                $second = mysql_result($result, 1);
                if (($second - $first) == 1){
                    makedetails($result); //  -> **does not work**
                }
                else {
                    maketable($aantal, $result); //  -> **does not work**
                }
            }
        }
    }

function maketable($aantal, $result) { … }
function makedetails($result){ … }

greetings

Answer 1

Had to fetch my result once more to make it possible to loop through my array once again.

$first = mysql_result($result, 0);
$second = mysql_result($result, 1);
$result = mysql_query($sql) or die("Query failed with error: ".mysql_error());

But thanks for the help!

greetings