<?php $db_link = mysqli_connect('localhost', 'web_b-3', 'een7Ao6s', 'bibliothek_candle', '3306'); function runSQL($sql){ global $db_link; $db_res = mysqli_query($db_link, $sql); if(!$db_res){ header("Location: 404.html"); exit; } return $db_res; } runSQL("ALTER TABLE `benutzer` AUTO_INCREMENT = 1"); runSQL("ALTER TABLE `adresse` AUTO_INCREMENT = 1"); ?>