Undefiend index

Question

When I send my form to another page it says: Notice: Undefined index: gebruikersnaamRegistreren in on line 55 this for every name of the inputs

HTML Code

<form action="RegistrerenSucces.php" method="POST">
<fieldset id="inputs">
<input id="gebruikersnaam" type="text" name="gebruikersnaamRegistreren" placeholder="Gebruikersnaam " required />   
                        <input id="paswoord" type="password" name="paswoordRegistreren" placeholder="Paswoord" required />
                        <input id="voornaam" type="text" name="voornaamRegistreren" placeholder="Voornaam" required />
                        <input id="achternaam" type="text" name="achternaamRegistreren" placeholder="Achternaam" required />
                        <input id="email" type="email" name="emailRegistreren" placeholder="E-mail adres" required />
                        <input id="straat" type="text" name="straatRegistreren" placeholder="Straatnaam en huisnummer" required />
                        <input id="postcode" type="text" name="postcodeRegistreren" placeholder="Postcode" required />
                        <input id="gemeente" type="text" name="gemeenteRegistreren" placeholder="Gemeente" required />
                    </fieldset>
                    <fieldset id="actions">
                        <input type="submit" id="submit" value="Registreren" />
                    </fieldset>
                </form>

PHP Code

<?php
    $dbhost='localhost';
    $dbuser='root';
    $dbpassword='usbw';
    $dbdatabase='computingstore';


    $paswoordEncrypted = hash('sha512',$_POST['paswoordRegistreren']);


    print_r($_POST);

    /*Database verbinden*/
$link = mysqli_connect($dbhost , $dbuser ,$dbpassword , $dbdatabase);

$query = ("INSERT INTO gebruiker (gebruikersnaam, paswoord, voornaam, achternaam, e-mail, straatnaam, postcode, gemeente) 
VALUES 
('".$_POST['gebruikersnaamRegistreren']."',
'".$paswoordEncrypted."',
'".$_POST['voornaamRegistreren']."',
'".$_POST['achternaamRegistreren']."', 
'".$_POST['emailRegistreren']."', 
'".$_POST['straatnaamRegistreren']."',
".$_POST['postcodeRegistreren'].",
'".$_POST['gemeenteRegistreren']."')");

mysqli_query($link,$query);

/*Verbing afsluiten*/
mysqli_close($link);


?>

How can i fix this error i have been looking for it for 2 days now.

As a fellow dutch person, i advise you to write your code in english. — Henk Jansen, Oct 10 '13 at 10:24
Your code is very open to SQL injections and is therefore very insecure. Magically changing `mysql` to `mysqli` does not fix this. You have to take use of the `mysqli` features such as prepared statements and binding values. — h2ooooooo, Oct 10 '13 at 10:30
possible duplicate of [Reference - What does this error mean in PHP?](http://stackoverflow.com/questions/12769982/reference-what-does-this-error-mean-in-php) — deceze, Oct 10 '13 at 10:36

score 3 · Answer 1 · edited Oct 10 '13 at 10:53

3

Try to use isset to determine if the index is defined and assign an empty value if it is not, and see if the problem resolves.

For example, use the following in the second page:

isset($_POST['gebruikersnaamRegistreren']) ? $_POST['gebruikersnaamRegistreren'] : "";

instead of

$_POST['gebruikersnaamRegistreren']

repeat this for all the fields for which you are having problem .

edited Oct 10 '13 at 10:53

Jonast92

4,964
1
18
32

answered Oct 10 '13 at 10:28

hiddenguy

61
6

score 0 · Answer 2 · answered Oct 10 '13 at 10:32

0

Everything seems to work perfectly. Try to use prepare for your queries though. Nevertheless I recommend you to check for any javascript issues.

answered Oct 10 '13 at 10:32

Megadreams

18
2

Undefiend index

2 Answers2