feature: added epay & mGate payment

library/MGate.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace Library;
+
+use \Curl\Curl;
+
+class MGate
+{
+    private $appId;
+    private $appSecret;
+    private $url;
+
+    public function __construct($url, $appId, $appSecret)
+    {
+        $this->appId = $appId;
+        $this->appSecret = $appSecret;
+        $this->url = $url;
+    }
+
+    public function pay($params)
+    {
+        ksort($params);
+        $str = http_build_query($params) . $this->appSecret;
+        $params['sign'] = md5($str);
+        $curl = new Curl();
+        $curl->post($this->url . '/v1/gateway/fetch', http_build_query($params));
+        $result = $curl->response;
+        if (!$result) {
+            abort(500, '网络异常');
+        }
+        if ($curl->error) {
+            $errors = (array)$result->errors;
+            abort(500, $errors[array_keys($errors)[0]][0]);
+        }
+        $curl->close();
+        if (!isset($result->data->trade_no)) {
+            abort(500, '接口请求失败');
+        }
+        return $result->data->pay_url;
+    }
+
+    public function verify($params)
+    {
+        $sign = $params['sign'];
+        unset($params['sign']);
+        ksort($params);
+        reset($params);
+        $str = http_build_query($params) . $this->appSecret;
+        if ($sign !== md5($str)) {
+            return false;
+        }
+        return true;
+    }
+}