PHP Trade Indicators (StochRSI and macd)

Im from Brazil, if you speak portuguese, please use that. Project: I need two functions in php.. 01) Calculate StochRSI and return 1 for buy, 0 (zero) for not buy, and -1 to sell. 02) Calculate MACD and return 1 for buy, 0 (zero) for not buy, and -1 to sell. You will CURL data in link below: $start = ????? [login to view URL]'.$start.'&end=9999999999&period=302 You CAN NOT use trade library from php, i do not install any extra library.. only php default library can be used. Any question, chat me please. Im traying determinate the best moment to buy a coin, or sell it.. Any extra improves/ideas are welcome.