Strip HTML code & make data safe!

function make_safe($variable)
{
$variable = htmlentities($variable, ENT_QUOTES);

if (get_magic_quotes_gpc())
{
$variable = stripslashes($variable);
}

$variable = mysql_real_escape_string(trim($variable));
$variable = strip_tags($variable);
$variable = str_replace("\r\n", "", $variable);

return $variable;
}