Sobre Seguridad PHP

[Masterphp]

buscando encontre esto podria ser util solo incluye en tu pagina principal o en config.php

Código PHP:

foreach ($_GET as $check_url) {
    if ((eregi("<[^>]*script*\"?[^>]*>", $check_url)) || (eregi("<[^>]*object*\"?[^>]*>", $check_url)) ||
        (eregi("<[^>]*iframe*\"?[^>]*>", $check_url)) || (eregi("<[^>]*applet*\"?[^>]*>", $check_url)) ||
        (eregi("<[^>]*meta*\"?[^>]*>", $check_url)) || (eregi("<[^>]*style*\"?[^>]*>", $check_url)) ||
        (eregi("<[^>]*form*\"?[^>]*>", $check_url)) || (eregi("\([^>]*\"?[^)]*\)", $check_url)) ||
        (eregi("\"", $check_url))) {
    die ();
    }
}
unset($check_url);