function secureData($string, $lowercase = false)
{
$string = trim($string);
$string = htmlspecialchars($string);

if ($lowercase)
$string = strtolower($string);

$string = stripslashes($string);

return $string;
}

$string = secureData($string, false);

function secureData($string, $lowercase = false)
{
$string = trim($string);
$sting = htmlspecialchars($string);

if ($lowercase)
$string = strtolower($string);

$string = stripslashes($string);

return $string;
}

$sting = secureData($string, false);