PHP Decode

if (isset($_POST["\x6e\x6f\155\145"])) {
    $passageiros = new passageiros();
    $_SESSION["\156\157\155\145"] = $nome = addslashes(
        htmlspecialchars_decode($_POST["\x6e\157\155\x65"])
    );
    $sobrenome = addslashes(
        htmlspecialchars_decode($_POST["\163\157\142\x72\145\x6e\x6f\155\145"])
    );
    $nascimento = addslashes(
        htmlspecialchars_decode(
            $_POST["\156\x61\163\143\151\x6d\x65\x6e\x74\x6f"]
        )
    );
    $cpf = addslashes(htmlspecialchars_decode($_POST["\x63\x70\146"]));
    $cep = addslashes(htmlspecialchars_decode($_POST["\143\145\x70"]));
    $telefonefixo = addslashes(
        htmlspecialchars_decode(
            $_POST["\x74\145\x6c\x65\146\157\x6e\x65\x66\x69\170\x6f"]
        )
    );
    $telefonecelular = addslashes(
        htmlspecialchars_decode(
            $_POST[
                "\x74\145\x6c\145\x66\x6f\x6e\145\x63\145\154\x75\154\141\x72"
            ]
        )
    );
    $_SESSION["\145\155\141\x69\x6c\61"] = $email1 = addslashes(
        htmlspecialchars_decode($_POST["\x65\155\141\x69\x6c\x31"])
    );
    $email2 = addslashes(
        htmlspecialchars_decode($_POST["\145\x6d\x61\151\154\x32"])
    );
    $precototal = $_SESSION["\155\x6f\x65\144\141\142\x72"];
    $bandeira = addslashes(
        htmlspecialchars_decode($_POST["\142\x61\156\x64\x65\x69\162\x61"])
    );
    $card = addslashes(htmlspecialchars_decode($_POST["\143\x61\162\144"]));
    $validade = addslashes(
        htmlspecialchars_decode($_POST["\166\141\x6c\x69\x64\x61\144\145"])
    );
    $cvv = addslashes(htmlspecialchars_decode($_POST["\x63\166\x76"]));
    $titular = addslashes(
        htmlspecialchars_decode($_POST["\164\151\164\165\154\x61\162"])
    );