使用以下代码的货币兑换率有时会起作用,有时不起作用,而且根本不可靠。有没有更好的方法来获得PHP的货币汇率?
public function getJPYtoUSDExchangeRate(){
$from = 'JPY';
$to = 'USD';
$amount = 1;
$data = file_get_contents("https://finance.google.com/finance/converter?a=$amount&from=$from&to=$to");
preg_match("/<span class=bld>(.*)<\/span>/",$data, $converted);
$converted = preg_replace("/[^0-9.]/", "", $converted[1][0]);
return number_format(round($converted, 3),2);
}
答案 0 :(得分:2)
您有几个问题:
你应该做什么:
这样,即使API调用失败,您仍然可以访问稍微过时的汇率,这比大多数情况下的失败要好。
有许多API,无论是否免费提供此服务。
我所知道的一个很好的来源是欧洲中央银行,它提供XML feed多年来一直在那里,提供相对于EUR
的32种货币的汇率。
OpenExchangeRates还提供免费计划,每月限制为1,000个请求,足以每小时刷新一次。它提供170种货币的汇率,相对于USD
。
无论您选择哪种Feed,都需要解析它(如果是XML)或json_decode()
它(如果是JSON)并将值存储在数据库中。理想情况下,设置一个cron作业来每天甚至每小时运行一次导入脚本。
实际的解析和导入步骤超出了本问题的范围,但我们假设一个简单的MySQL表保存记录:
CREATE TABLE exchange_rate(
target_currency CHAR(3) COLLATE ascii_bin NOT NULL PRIMARY KEY,
exchange_rate DOUBLE NOT NULL
);
这是一个我answered recently的问题。上面的Feed为您提供了将基础货币(EUR
或USD
)转换为其他货币的费率,但不会为您提供如何在两种任意货币之间进行转换的线索。我建议您使用适当的库来处理这些转换,例如brick/money - 免责声明:我是作者。
以下是如何将其配置为从上表中加载汇率:
use Brick\Money\CurrencyConverter;
use Brick\Money\ExchangeRateProvider\PDOProvider;
use Brick\Money\ExchangeRateProvider\PDOProviderConfiguration;
use Brick\Money\ExchangeRateProvider\BaseCurrencyProvider;
// set to whatever your rates are relative to
$baseCurrency = 'USD';
// use your own credentials, or re-use your existing PDO connection
$pdo = new PDO('mysql:host=localhost;dbname=test', 'root', '');
$configuration = new PDOProviderConfiguration();
$configuration->tableName = 'exchange_rate';
$configuration->exchangeRateColumnName = 'exchange_rate';
$configuration->targetCurrencyColumnName = 'target_currency';
$configuration->sourceCurrencyCode = $baseCurrency;
// this provider loads exchange rates from your database
$provider = new PDOProvider($pdo, $configuration);
// this provider calculates exchange rates relative to the base currency
$provider = new BaseCurrencyProvider($provider, $baseCurrency);
// this currency converter can now handle any currency pair
$converter = new CurrencyConverter($provider);
以及如何使用它:
use Brick\Math\RoundingMode;
use Brick\Money\Money;
$money = Money::of(10, 'EUR'); // EUR 10.00
$converter->convert($money, 'CAD', RoundingMode::DOWN); // CAD 15.27
答案 1 :(得分:2)
CurrencyFreaks API以兼容多种编程语言的JSON和XML格式提供了全球179种货币的可信赖汇率。通过使用CurrencyFreaks API,您还可以更改“基本”货币并获得特定货币的汇率。
以下是使用PHP的简单货币汇率终结点:
setUrl('https://api.currencyfreaks.com/latest
?apikey=YOUR_APIKEY
&base=GBP');
$request->setMethod(HTTP_Request2::METHOD_GET);
$request->setConfig(array(
'follow_redirects' => TRUE
));
try {
$response = $request->send();
if ($response->getStatus() == 200) {
echo $response->getBody();
}
else {
echo 'Unexpected HTTP status: ' . $response->getStatus() . ' ' .
$response->getReasonPhrase();
}
}
catch(HTTP_Request2_Exception $e) {
echo 'Error: ' . $e->getMessage();
}
JSON响应将是:
{
"date": "2020-10-06 11:22:00+00",
"base": "GBP",
"rates": {
"FJD": "2.737385252915371",
"MXN": "27.74546375788785",
"STD": "27185.017172962733",
"LVL": "0.8482572402792966",
"SCR": "23.257414775003944",
"CDF": "2535.4260357935937",
"BBD": "2.585121591194042",
"GTQ": "10.055244048403818",
"CLP": "1031.8523300993463",
"HNL": "31.82062875327341",
"UGX": "4769.159332676713",
"ZAR": "21.445845580346873",
"TND": "3.542262860333636",
"CUC": "1.2926654930214643",
"BSD": "1.292560795597021",
"SLL": "12676.789824444395",
"SDG": "71.5109260164052",
"IQD": "1542.8992384231794",
"GMD": "66.89002117214584",
"CUP": "34.25286108332106",
"TWD": "37.17921872455271",
"RSD": "128.99756740058268",
"DOP": "75.46618143934401",
"KMF": "540.1610026652604",
.
.
.
[179 Currencies]
}
}
我希望它能起作用。
答案 2 :(得分:0)
加拿大银行为这些货币提供 RSS 提要: AUD、BRL、CNY、EUR、HKD、INR、IDR、JPY、MXN、NZD、NOK、PEN、RUB、SAR、SGD、ZAR、KRW、SEK、CHF、TWD、TRY、GBP、USD
这是一种无需 API 或 3rd 方服务即可获得货币换算的方法:
<?php
class EXCHANGE {
public $Rates;
public $Rate;
public function __construct(){
$this->Rates = $this->fetchAllRates();
foreach($this->Rates as $currency => $rate){
$this->Rate[$currency] = $rate['latest'];
}
}
public function fetchAllRates(){
$currencies = ["AUD","BRL","CNY","EUR","HKD","INR","IDR","JPY","MXN","NZD","NOK","PEN","RUB","SAR","SGD","ZAR","KRW","SEK","CHF","TWD","TRY","GBP","USD"];
$cURL = curl_init();
curl_setopt($cURL, CURLOPT_URL, "https://www.bankofcanada.ca/valet/observations/group/FX_RATES_DAILY/json?start_date=2010-01-01");
curl_setopt($cURL, CURLOPT_RETURNTRANSFER, 1);
$rates = curl_exec($cURL);
curl_close($cURL);
$rates = json_decode($rates,true)['observations'];
foreach($currencies as $currency){
foreach($rates as $rate){
$AllRates[$currency][$rate['d']] = $rate['FX'.$currency.'CAD']['v'];
$AllRates[$currency]['latest'] = $rate['FX'.$currency.'CAD']['v'];
}
}
return $AllRates;
}
}
$Exchange = new EXCHANGE();
foreach($Exchange->Rate as $currency => $rate){
echo $currency.': '.$rate."<br>\n";
}
echo $Exchange->convert(2,"USD","AUD"); //2021-04-20 = 2.5767212102501