function insert($field_names, $alias, $assignment, $table_name){
    // Das funzt
    global $db;


    $array = array();
    $array['table'] = $table_name;
    $array['field_names'] = $field_names;
    $array['alias'] = $alias;
    $array['assignment'] = $assignment;

    $q = "INSERT INTO `%s` (%s) VALUES (%s)";
    $q = sprintf($q, $array['table'], implode(", ",$array['field_names']), implode(", ",$array['alias']));
    $q = $db->prepare($q);
    $r = $q->execute($assignment);

    $id = $db->lastInsertId();
      return $id;

}

function update($field_names, $alias, $assignment, $table_name){
    // das nicht :-(
    global $db;
    $array = array();
    $array['table'] = $table_name;
    $array['field_names'] = $field_names;
    $array['alias'] = $alias;
    $array['assignment'] = $assignment;


    $q = "UPDATE `%s` SET (%s) = (%s)";

    $q = sprintf($q, $array['table'], implode(", ",$array['field_names']), implode(", ",$array['alias']));
  $q = $db->prepare($q);
  $r = $q->execute($assignment);

        return $r;