function Clean_Key($key) {
$key = trim($key);
if ($key == '') {
return '';
}
$key = preg_replace( "/\.\./" , '' , $key );
$key = preg_replace( "/\_\_(.+?)\_\_/" , '' , $key );
$key = preg_replace( "/^([\w\.\-\_]+)$/", "$1", $key );
return $key;
}

function Clean_Value($var) {
$var = (get_magic_quotes_gpc()) ? trim(stripslashes($var)):trim($var);
$var = preg_replace("#\r#","",$var);
return preg_replace("#&(\#[0-9]+;)#", "&$1", htmlspecialchars($var,ENT_QUOTES));
}

function Clean_Key($key) {
if ($key == '') {
return '';
}
return $key;
}

function Clean_Value($var) {
return $var;
}