sql geht nicht

[admin]

Beispiel:

PHP-Code:

<?php 

$query = sprintf($query, mysqli_real_escape_string($mysqli,$name),

mysqli_real_escape_string($mysqli, $passwort_hash),

mysqli_real_escape_string($mysqli, $preis),

mysqli_real_escape_string($mysqli, $email),  

mysqli_real_escape_string($mysqli, $staff));