modify.php

<?php
	include 'connection.php';

if(!isset($_POST['submit'])){

$q = "SELECT * FROM kunder WHERE ID = $_GET[id]";
$result = mysql_query($q);
$person = mysql_fetch_array($result);

}

	?>
	<h1>Du ändrar en användares information</h1>
	<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
Namn: <input type="text" name="inputName" value="<?php echo $kunder['Name']; ?>"/> <br />

Problem: <input type="text" name="inputDesc" value="<?php echo $kunder['Description']; ?>"/><br />
<br />
<input type="hidden" name="id" value="<?php echo $_GET['id']; ?>" />
<input type="submit" name="submit" value="Ändra" />



</form>
	<?php

	if(isset($_POST['submit'])){

	$u ="UPDATE kunder SET `Name`='$_POST[inputName]', `Description`='$_POST[inputDesc]' WHERE ID = $_POST[id]";
	mysql_query($u) or die (mysql_error());

	echo "Användaren har ändrats";
	header("Location: edit.php");

	}
	else{

	}

	?>