Question

我正在使用yahoo货币转换器API转换数据库上显示的每种产品的货币。页面上显示该货币。

功能一

        function currencyConverter($currency_from,$currency_to,$currency_input){
            $yql_base_url = "http://query.yahooapis.com/v1/public/yql";
            $yql_query = 'select * from yahoo.finance.xchange where pair in ("'.$currency_from.$currency_to.'")';
            $yql_query_url = $yql_base_url . "?q=" . urlencode($yql_query);
            $yql_query_url .= "&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys";
            $yql_session = curl_init($yql_query_url);
            curl_setopt($yql_session, CURLOPT_RETURNTRANSFER,true);
            $yqlexec = curl_exec($yql_session);
            $yql_json =  json_decode($yqlexec,true);
            $currency_output = (float) $currency_input*$yql_json['query']['results']['rate']['Rate'];

            return $currency_output;
        }

功能二

  function getProducts($currency)
  {
    if ($result = $connection->query("SELECT `name`, `price` FROM `products`")) {

      $product_count = mysqli_num_rows($result);
      if ($product_count >0) {
        $output = ""; 
        while ($row = mysqli_fetch_assoc($result)) {
          $price = currencyConverter("USD", $currency, $row['item_price']);
          $output = $output."<div class='item'><h3 class='product-name'>".$row['item_name']."</h3><h3 class='product-price'>".$currency." ".$price."</h3></div></div>";
        }
        echo $output;
        mysqli_free_result($result);
      } else {
         echo "nope";
      }
    } else {
      echo "failed";
    }   
  }

产品价格以美元保存在数据库中。问题是它需要很长时间来转换每个价格。有没有更好的方法呢？

Answer 1

尝试这些：

var resolver = json.ContractResolver as DefaultContractResolver ?? new DefaultContractResolver();
resolver.NamingStrategy = new CustomNamingStrategy();
json.ContractResolver  = resolver;

Answer 2

现在让它工作得更快。

    if ($result = $connection->query("SELECT `name`, `price` FROM `products`")) {

      $product_count = mysqli_num_rows($result);
      if ($product_count >0) {
        $output = ""; 
        // get current currency rate
        $exchange_rate = currencyConverter("USD", $currency, "1");
        while ($row = mysqli_fetch_assoc($result)) {
          $price = $row['item_price'] * $exchange_rate;
          $output = $output."<div class='item'><h3 class='product-name'>".$row['item_name']."</h3><h3 class='product-price'>".$currency." ".$price."</h3></div></div>";
        }
        echo $output;
        mysqli_free_result($result);
      } else {
         echo "nope";
      }
    } else {
      echo "failed";
    }

PHP货币转换器

2 个答案: