<?php
error_reporting(E_ALL);
$ip = 1234567;

$db = new mysqli('localhost', 'ban', 'Blubb123-', 'ban');
$db->set_charset('utf8');

if ($db->connect_errno){
    die('Sorry - gerade gibt es ein Problem');
}
function set($ip) {
    $db->prepare("INSERT INTO list (ip) VALUES (123457)");
//    $dbAction->bind_param('i',$ip);
    $result = $db->execute();
    return $result;
}