base64_encode() $txt = "안녕 하세요?"; $encode = base64_encode($txt ); $decode = base64_decode($encode ); echo "encode 전 : " . $txt ; echo "encode 후 : " . $encode ; echo "decode 후 : " . $decode ; urlencode() $txt = "안녕 하세요?"; $encode = URLencode($txt ); $decode = URLdecode($encode ); echo "encode 전 : " . $txt ; echo "encode 후 : " . $encode ; echo "deco..