Question

I have an if statement and am having problems with it.

It needs to say:

If the stamina field is bigger then 0 then + exp field, + gold field, – stamina field else do something else

I have the adding and taking away fields part working. However its not doing it while in this if statement UNLESS I put it in the “do something else” part. However it will not stop at 0 when i put it in that section of the if statement.

<?php  

    include '../core/init.php';
    $id = $_SESSION['user_id'];
    $result = mysql_query('SELECT `stamina`FROM `characters` WHERE `id` = "$id"');
    $row = mysql_fetch_row($result);
    $stam = $row[0];

    if ($stam > 0) {
        mysql_query('UPDATE `characters` SET `exp` = `exp` + 1, `gold` = `gold`+10, `stamina`=`stamina`-1 WHERE id = "'.$id.'"');
    } else {

    }

?>

My connection is “required” in the init.php which works completely fine.

I have tried lots of different ways of turning the equation round.

Okay so now I’ve edited the statement and it’s half working now. Here it is:

<?php

    include '../core/init.php';
    $id = $_SESSION['user_id'];
    $stam = mysql_query('SELECT `stamina` FROM `characters` WHERE `id` = "$id"');

    if ($stam >= 1){
        mysql_query('UPDATE `characters` SET `exp` = `exp` + 1, `gold` = `gold`+10, `stamina`=`stamina`-1 WHERE id = "'.$id.'"');
    } else if ($stam < 1){

    }

?>

The new problem is that it still runs the query inside the if statement even if $stam smaller than 1.

Answer 1

Perhaps specify that $stam is an integer? Try:

if ((int)$stam >= 1 ){