Gebruikersgegevens updaten (Opgelost)

<?php
switch($_GET['action']
{
		case update:
			$id = $_GET['update'];
			mysql_query("UPDATE users SET name='".$_POST['uname']."', level='".$_POST['ulevel']."' WHERE id='".$id."'");
			
			echo "Updated";
			echo $back;
		break;


		default:
			$res = mysql_query("SELECT * FROM users ORDER BY level DESC") or die(mysql_error());

			while($arr = mysql_fetch_row($res))
			 {
?>
				<form method="post" action="<?php echo $_SERVER['REQUEST_URI']."&&action=update"; ?>">
				 <input type="text" name="uname" value="<?php echo $arr[1]; ?>">
				 <select name="ulevel">
					<option <?php if($arr['3'] == 2) { echo "selected"; } ?>>2
					<option <?php if($arr['3'] == 1) { echo "selected"; } ?>>1
				 </select>
				
<?php

				echo "<a href='".$_SERVER['REQUEST_URI']."&&del=".$arr[0]."&&action=del'>Del</a><br>";
				echo "<a href='".$_SERVER['REQUEST_URI']."&&update=".$arr[0]."&&action=update'>Update</a><br>";
				echo "</form> ";
			 }
      break;
 }
?>

<?php
switch($_GET['action']
{
		case update:
			$id = $_GET['update'];
			mysql_query("UPDATE users SET name='".$_POST['uname']."', level='".$_POST['ulevel']."' WHERE id='".$id."'");
 
			echo "Updated";
			echo $back;
		break;
 
 
		default:
			$res = mysql_query("SELECT * FROM users ORDER BY level DESC") or die(mysql_error());
 
			while($arr = mysql_fetch_row($res))
			 {
?>
				<form method="post" action="<?php echo $_SERVER['REQUEST_URI']."&&action=update"; ?>">
				 <input type="text" name="uname" value="<?php echo $arr[1]; ?>">
				 <select name="ulevel">
					<option <?php if($arr['3'] == 2) { echo "selected"; } ?>>2
					<option <?php if($arr['3'] == 1) { echo "selected"; } ?>>1
				 </select>
 
<?php
 
				echo "<a href='".$_SERVER['REQUEST_URI']."&&del=".$arr[0]."&&action=del'>Del</a><br>";
				echo "<a href='".$_SERVER['REQUEST_URI']."&&update=".$arr[0]."&&action=update'>Update</a><br>";
				echo "</form> ";
			 }
      break;
 }
?>

<?php
switch($_GET['action']) // ')' vergeten.
{
    case 'update':         // Haakjes rond 'update', update is een string.
      $id = $_GET['update'];
      mysql_query("UPDATE users SET name='".$_POST['uname']."', level='".$_POST['ulevel']."' WHERE id=".$id); // '$id' is een INT, geen haakjes errond dus!
      
      echo "Updated";
      echo $back;
    break;


    default:
      $res = mysql_query("SELECT * FROM users ORDER BY level DESC") or die(mysql_error());

      while($arr = mysql_fetch_row($res))
       {
?>
        <form method="post" action="<?php echo $_SERVER['REQUEST_URI'].'&action=update'; ?>"> <!-- "" wordt '' aangezien je al 'action="' gebruikt.
        																						Wat doet die tweede & daar dan? (&&action) -->
         <input type="text" name="uname" value="<?php echo $arr[1]; ?>">
         <select name="ulevel">
          <option value="2" <?php if($arr['3'] == 2) { echo "selected"; } ?>>2
          <option value="1" <?php if($arr['3'] == 1) { echo "selected"; } ?>>1
         </select>
        
<?php

        echo "<a href='".$_SERVER['REQUEST_URI']."&del=".$arr[0]."&action=del'>Del</a><br>";				// tweede & weg.
        echo "<a href='".$_SERVER['REQUEST_URI']."&update=".$arr[0]."&action=update'>Update</a><br>";
        echo "</form>";
       }
      break;
 }
?>

<?php
switch($_GET['action']) // ')' vergeten.
{
    case 'update':         // Haakjes rond 'update', update is een string.
      $id = $_GET['update'];
      mysql_query("UPDATE users SET name='".$_POST['uname']."', level='".$_POST['ulevel']."' WHERE id=".$id); // '$id' is een INT, geen haakjes errond dus!
 
      echo "Updated";
      echo $back;
    break;
 
 
    default:
      $res = mysql_query("SELECT * FROM users ORDER BY level DESC") or die(mysql_error());
 
      while($arr = mysql_fetch_row($res))
       {
?>
        <form method="post" action="<?php echo $_SERVER['REQUEST_URI'].'&action=update'; ?>"> <!-- "" wordt '' aangezien je al 'action="' gebruikt.
        																						Wat doet die tweede & daar dan? (&&action) -->
         <input type="text" name="uname" value="<?php echo $arr[1]; ?>">
         <select name="ulevel">
          <option value="2" <?php if($arr['3'] == 2) { echo "selected"; } ?>>2
          <option value="1" <?php if($arr['3'] == 1) { echo "selected"; } ?>>1
         </select>
 
<?php
 
        echo "<a href='".$_SERVER['REQUEST_URI']."&del=".$arr[0]."&action=del'>Del</a><br>";				// tweede & weg.
        echo "<a href='".$_SERVER['REQUEST_URI']."&update=".$arr[0]."&action=update'>Update</a><br>";
        echo "</form>";
       }
      break;
 }
?>