fai così:
$str = "<a href=\"" . $dati["url"] . $iduser . "\"" . " target=\"". $dati["target"] . "\">" . $dati["testo_click"] . "</a>";
eval("\$str = \"".addslashes($str)."\";");
echo $str;
fai così:
$str = "<a href=\"" . $dati["url"] . $iduser . "\"" . " target=\"". $dati["target"] . "\">" . $dati["testo_click"] . "</a>";
eval("\$str = \"".addslashes($str)."\";");
echo $str;