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avatar image
Question by prateek1234 · May 02, 2017 at 06:58 PM · phpwebsiteserver-hosting

getting error undefine index in uploading score

i am using this tutorial http://wiki.unity3d.com/index.php?title=Server_Side_Highscores

i am getting an error

Notice: Undefined index: name in addscore.php on line 16

Notice: Undefined index: score in addscore.php on line 16

Notice: Undefined variable: hash inaddscore.php on line 17

this is my pdo script

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avatar image prateek1234 · May 02, 2017 at 07:04 PM 0
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     // Configuration
     $hostname = 'localhost';
     $username = 'idprateek';
     $password = '12345';
     $database = 'high';
 
     $secretKey = "123546789"; // Change this value to match the value stored in the client javascript below 
 
     try {
         $dbh = new PDO('mysql:host='. $hostname .';dbname='. $database, $username, $password);
     } catch(PDOException $e) {
         echo '<h1>An error has ocurred.</h1><pre>', $e->getMessage() ,'</pre>';
     }
 
     $realHash = md5($_GET['name'] . $_GET['score'] . $secretKey); 
     if($realHash == $hash) { 
         $sth = $dbh->prepare('INSERT INTO scores VALUES (null, :name, :score)');
         try {
             $sth->execute($_GET);
         } catch(Exception $e) {
             echo '<h1>An error has ocurred.</h1><pre>', $e->getMessage() ,'</pre>';
         }
     } 

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Answer by Jawchewa · May 03, 2017 at 01:19 AM

It looks like the error is that you are never defining the variable $hash, and that the indexes for name and score are never set.

Looking at the tutorial, I noticed a line that says, "Please! This code need to be tested. Tested, confirmed not working. Use snippet above. " I would probably recommend trying the first code snippet example, instead of the second one, and seeing where that takes you.

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Answer by CurtisGM · Feb 28, 2018 at 11:58 PM

Although this response is quite late, this is for those of you who come to this particular question also looking for an answer.

As Jawchewa mentioned, $hash was never defined as well as the indexes when executing the command. Here is an updated version that I have modified and tested.

 <?php
         // Configuration
         $hostname = 'INSERT_HOSTNAME_HERE';
         $username = 'INSERT_USERNAME_HERE';
         $password = 'INSERT_PASSWORD_HERE';
         $database = 'INSERT_DATABASE_HERE';
  
         $secretKey = "INSERT_SECRET_KEY_HERE"; // Change this value to match the value stored in the client javascript below 
  
         try {
             $dbh = new PDO('mysql:host='. $hostname .';dbname='. $database, $username, $password);
         } catch(PDOException $e) {
             echo '<h1>An error has ocurred.</h1><pre>', $e->getMessage() ,'</pre>';
         }
 
         $username = $_GET['name'];
         $userscore = $_GET['score'];
 
         $realHash = md5($_GET['name'] . $_GET['score'] . $secretKey);
         $hash = $_GET['hash'];
  
         if($realHash == $hash) { 
             $sth = $dbh->prepare('INSERT INTO scores VALUES (null, :username, :userscore)');
             try {
                 $sth->execute(['username' => $username, 'userscore' => $userscore]);
             } catch(Exception $e) {
                 echo '<h1>An error has ocurred.</h1><pre>', $e->getMessage() ,'</pre>';
             }
         } 
 ?>

Hopefully someone finds this useful :)

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