貨幣換算USD到INR

Question

我想將貨幣從USD兌換成INR，USD中的值從url中回收，我想根據當前匯率將其兌換成INR。 這裏是第一碼：

<?php 
require_once('currency.php'); 

$val=$_GET["val"]; 

echo currency($val); 

?> 

和第二代碼：

<?php 

function currency($val) { 
$amount = $val; 

$url = "http://www.google.com/ig/calculator?hl=en&q=$amountUSD=?INR"; 
$ch = curl_init(); 
$timeout = 0; 
curl_setopt ($ch, CURLOPT_URL, $url); 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_USERAGENT , "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)"); 
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); 
$rawdata = curl_exec($ch); 
curl_close($ch); 
$data = explode('"', $rawdata); 
$data = explode(' ', $data['3']); 
$var = $data['0']; 
return round($var,3); 
} 

?> 

bytheway正在測試上0fees.net這個代碼，免費的託管網站，那麼有沒有對於任何問題我正在嘗試將美元兌換成INR兌換。

Answer 1

錯誤在於以下代碼：

function currency($val) { 
    $amount = $val; 
    $url = "http://www.google.com/ig/calculator?hl=en&q=$amountUSD=?INR"; 
    // ...            ^^^^^^^^^^ 
} 

PHP嘗試計算變量$amountUSD（根據PHP的string parsing rules）和失敗的通知：

PHP Notice: Undefined variable: amountUSD in usdtoinr.php code on line 3 

相反，你應該寫：

function currency($val) { 
    $amount = floatval($val); 
    $url = 'http://www.google.com/ig/calculator?hl=en&q=' . $amount . 'USD=?INR'; 
    // ... 
} 

要捕捉這些錯誤未來，請務必在開發機器上設置error_reporting至E_ALL | E_STRICT。

此外，谷歌查詢的結果是一個JSON文檔。由於在對象屬性的順序可能會有所不同，你必須使用正確的JSON解析器，例如json_decode解析它，就像這樣：

$data = json_decode($rawdata, true); 
$tmp = explode(' ', $data['rhs']); 
return floatval($tmp[0]); 

在一般情況下，這也是一個好主意，包括一個提示您用戶代理中的實際用戶代理（例如，軟件的主頁）。

Answer 2

使用此PHP代碼

<?php 

function currency($from_Currency,$to_Currency,$amount) { 
$amount = urlencode($amount); 
$from_Currency = urlencode($from_Currency); 
$to_Currency = urlencode($to_Currency); 
$url = "http://www.google.com/ig/calculator?hl=en&q=$amount$from_Currency=?$to_Currency"; 
$ch = curl_init(); 
$timeout = 0; 
curl_setopt ($ch, CURLOPT_URL, $url); 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_USERAGENT , "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)"); 
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); 
$rawdata = curl_exec($ch); 
curl_close($ch); 
$data = explode('"', $rawdata); 
$data = explode('"', $data['3']); 
$var = $data[0]; 
return round($var,3); 
} 

?> 

，並使用這個輸出，當你進入它會從美元轉換爲INR

<?php 
require_once('currency.php'); 

    $amount=@$_GET["val"]; 

$from='USD'; 

$to='INR'; 

echo currency($from,$to,$amount); 

?> 

<form method="get" ><input name="val" type="text"><input type="submit" value="Submit"></form>