vragen verwijderen uit tabel

<?
include("connect.php");
              if(isset($_POST['submit'])){
                        if(empty($_POST['delete'])){
                                echo 'Je hebt niets geselecteerd';
                        }else{
                                $delete = implode(', ', $_POST['delete']);
                               mysql_query("Delete From vragen Where id =(".$delete.")");
                        }
                }else{
                        $sql = mysql_query("Select vraag,id From vragen");
                        if(mysql_num_rows($sql) == 0){
                                echo 'er is nog niets om te deleten.';
                        }else{
                                echo '<table><form target="_self" method="post">';
                                while($asc = mysql_fetch_assoc($sql)){
                                        echo '<tr><td><input type="checkbox" value="'.$asc['id'].'" name="delete" /></td>';
                                        echo '<td>'.$asc['id'].' - '.$asc['vraag'].'</td></tr>';
                                }
                                echo '<tr><td></td><td><input type="submit" value="delete" name="submit" /></td></tr>';

                                echo '</form></table>';

                        }

                }

?>

<?
include("connect.php");
              if(isset($_POST['submit'])){
                        if(empty($_POST['delete'])){
                                echo 'Je hebt niets geselecteerd';
                        }else{
                                $delete = implode(', ', $_POST['delete']);
                               mysql_query("Delete From vragen Where id =(".$delete.")");
                        }
                }else{
                        $sql = mysql_query("Select vraag,id From vragen");
                        if(mysql_num_rows($sql) == 0){
                                echo 'er is nog niets om te deleten.';
                        }else{
                                echo '<table><form target="_self" method="post">';
                                while($asc = mysql_fetch_assoc($sql)){
                                        echo '<tr><td><input type="checkbox" value="'.$asc['id'].'" name="delete" /></td>';
                                        echo '<td>'.$asc['id'].' - '.$asc['vraag'].'</td></tr>';
                                }
                                echo '<tr><td></td><td><input type="submit" value="delete" name="submit" /></td></tr>';
 
                                echo '</form></table>';
 
                        }
 
                }
 
?>

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

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