[tpcode]$pw = $_POST[password]; $sql = "SELECT * FROM users WHERE '" .$_POST[username]. "' = '" .$_POST[username]. "' AND '" .md5($pw). "' = '" .md5($pw). "';"; $query = mysql_query($sql); if (mysql_fetch_row($query) = 1) { echo "Sie haben sich erfolgreich eingeloggt."; }[/tpcode]