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README.md

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+# Currency
+
+Alfred Workflow Currency Exchange. Convert any currency to CNY.
+
+## API
+
+The free API is from juhe.cn
+
+Please apply from here:
+[https://www.juhe.cn/docs/api/id/80](https://www.juhe.cn/docs/api/id/80)
+
+Then fill in the appkey in ```CurrencyExchange.php```.
+
+```php
+<?php
+
+class CurrencyExchange
+{
+    // Please fill in appkey here.
+    private $_appKey = "appkey";
+    private $_api = "http://op.juhe.cn/onebox/exchange/currency";
+...
+```
+
+## Usage
+```
+usd 100
+```
+
+![usd](usd.jpg)
+
+```
+jpy 1000
+```
+
+![jpy](jpy.jpg)
+
+Press enter than the result will copy to you clipboard.
+
+## Customize
+
+Here is the code in workflow editor.
+
+```php
+require_once('CurrencyExchange.php');
+
+$currencyExchange = new CurrencyExchange();
+
+$currencyExchange->caculate("USD", "CNY", {query});
+```
+
+You can convert any currency to another by modify the code of last line, like JPY to USD.
+
+```
+$currencyExchange->caculate("JPY", "USD", {query});
+```

Source/CurrencyExchange.php

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+<?php
+
+class CurrencyExchange
+{
+    // Please fill in appkey here.
+    private $_appKey = "appkey";
+    private $_api = "http://op.juhe.cn/onebox/exchange/currency";
+
+    function caculate($from, $to, $amount)
+    {
+        header('Content-type:text/html;charset=utf-8');
+
+        $params = array(
+            "from" => $from,
+            "to" => $to,
+            "key" => $this->_appKey,
+        );
+        $paramstring = http_build_query($params);
+        $content = $this->juhecurl($this->_api, $paramstring);
+        $result = json_decode($content, true);
+        if ($result) {
+            if ($result['error_code'] == '0') {
+                $exchange = $result["result"][0]["exchange"];
+                $output = $exchange * $amount;
+
+                $json = [
+                    "items" => [
+                        [
+                            "title" => $output,
+                            "subtitle" => $from . " / " . $to . " = " . $output,
+                            "arg" => $output
+                        ]
+                    ]
+                ];
+                echo json_encode($json);
+
+            } else {
+                echo $result['error_code'] . ":" . $result['reason'];
+            }
+        } else {
+            echo "请求失败";
+        }
+    }
+
+    function juhecurl($url, $params = false, $ispost = 0)
+    {
+        $httpInfo = array();
+        $ch = curl_init();
+
+        curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
+        curl_setopt($ch, CURLOPT_USERAGENT, 'JuheData');
+        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60);
+        curl_setopt($ch, CURLOPT_TIMEOUT, 60);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
+        if ($ispost) {
+            curl_setopt($ch, CURLOPT_POST, true);
+            curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
+            curl_setopt($ch, CURLOPT_URL, $url);
+        } else {
+            if ($params) {
+                curl_setopt($ch, CURLOPT_URL, $url . '?' . $params);
+            } else {
+                curl_setopt($ch, CURLOPT_URL, $url);
+            }
+        }
+        $response = curl_exec($ch);
+        if ($response === FALSE) {
+            return false;
+        }
+        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+        $httpInfo = array_merge($httpInfo, curl_getinfo($ch));
+        curl_close($ch);
+        return $response;
+    }
+}
+
+//$currencyExchange = new CurrencyExchange();
+//$currencyExchange->caculate("USD", "CNY", 1000);