$dbh = mysql_connect("rdbms.strato.de", "U3137999", "sonne2014"); $query = "use DB3137999"; if (!mysql_query($query, $dbh)) die("Datenbank existiert nicht."); Warning: Cannot modify header information - headers already sent by (output started at /mnt/web310/d3/82/58672182/htdocs/website/dbaccess.php:6) in /mnt/web310/d3/82/58672182/htdocs/website/index.php on line 21 Fatal error: Call to undefined function dbconnect() in /mnt/web310/d3/82/58672182/htdocs/website/index.php on line 23