Get/Set Redis Key Using Predis with a little security

getsetredis.php

 if ($_SERVER['REQUEST_METHOD'] != 'GET'
      && $_SERVER['REQUEST_METHOD'] != 'PUT') {
      exit();
 }

    $body = @file_get_contents('php://input');
    
    if ($body == '') {
      exit();
    }

    $data = json_decode($body);
    
    require_once('../vendor/predis/predis/autoload.php');
    
    Predis\autoloader::register();

    $magicSalt = 'myMagicSalt';

    if (sha1($data->key . $magicSalt) != $data->sec_key) {
      echo json_encode(array('response' => false));
      exit();
    }

    try {
      $redis = new Predis\Client();

      if ($_SERVER['REQUEST_METHOD'] == 'PUT') {
        $redis->set($data->key, $data->value);
      } else if ($_SERVER['REQUEST_METHOD'] == 'GET') {
        $value = $redis->get($data->key);
      }
    } catch (Exception $e) {
      //do something with the exception
      echo $e->getMessage();
    }

    echo json_encode(array('response' => $value));