微信公众平台开发（七）聊天机器人功能开发_PHP教程

上一篇文章介绍了微信公众平台翻译功能的开发，实现了中、英、日语言互译，在实际生活中也能使用到。在接下来的这一篇文章中，我们将完成一个比较有趣的功能，那就是聊天机器人，可以在你无聊的时候陪你聊天逗你开心。

在这个实验中，我们将调取小黄鸡官方（http://www.simsimi.com/）提供的API，结合抓取小九机器人（http://www.xiaojo.com/）的网页，互相补充。Simsimi 是收费的，但你可以尝试7天测试，每天可以免费使用100条回复；小九机器人可以无限制使用，但前提是官方不屏蔽。

3.1 API & URL

官方API 地址：http://developer.simsimi.com/api

Request URL：http://sandbox.api.simsimi.com/request.p

这里使用免费版测试，付费版的类似，只是URL地址不同。

3.2 请求示例与参数说明

请求示例：

http://sandbox.api.simsimi.com/request.p?key=your_trial_key<span &lc<="" span="">=en<span &ft<="" span="">=1.0<span &text<="" span="">=hi</span></span></span>

参数说明：

Language code，支持的语言，简体中文用ch，繁体中文用zh，英文用en，详细请参考：http://developer.simsimi.com/lclist

　　0.0：未过滤（包含诅咒，性内容）；

　　1.0：过滤不文明字句（暂时只支持韩文）

3.3 返回值分析

result：执行结果返回码

• 400-Bad Request.
• 401-Unauthorized.
• 404-Not found.
• 500-Server Error.

id：回复的消息id（只有result=100 时才会有此项）

response：回复的消息（只有result=100 时才会有此项）

4.1 注册simsimi 账号

URL: http://developer.simsimi.com/signUp

4.2 激活账号

4.3 获取API Key

5.1 调用小黄鸡API 实现

调用simsim($keyword) 函数处理，将其中的“Your API Key” 换成申请到的API Key。

    <span <="" span=""><span 小黄鸡<="" span="">
    <span public<="" span=""> <span function<="" span=""> simsim(<span $keyword<="" span=""><span ){="" <="" span=""><span $key<="" span="">="<span>41250a68-3cb5-43c8-9aa2-d7b3caf519b1</span>"<span ;="" <="" span=""><span $url_simsimi<="" span="">="http://sandbox.api.simsimi.com/request.p?key=".<span $key<="" span="">."&lc=ch&ft=0.0&text=".<span $keyword<="" span=""><span ;="" <="" span=""><span $json<="" span="">=<span file_get_contents<="" span="">(<span $url_simsimi<="" span=""><span );　　<span="">// </span><span>把整个文件读入一个字符串中</span>
        </span><span $result<="" span="">=json_decode(<span $json<="" span="">,<span true<="" span=""><span );　　<span="">// </span><span>对JSON 格式的字符串进行编码</span>
        </span><span <="" span=""><span $errorcode="$result['result'];　　//" 调试用<="" span="">
        <span $response<="" span="">=<span $result<="" span="">['response'<span ];　　="" 回复的消息="" <="" span=""><span if<="" span="">(!<span empty<="" span="">(<span $response<="" span=""><span )){="" <="" span=""><span return<="" span=""> <span $response<="" span=""><span ;="" }<="" span=""><span else<="" span=""><span {="" <="" span=""><span $ran<="" span="">=<span rand<="" span="">(1,5<span );="" <="" span=""><span switch<="" span="">(<span $ran<="" span=""><span ){="" <="" span=""><span case<="" span=""> 1:
                    <span return<="" span=""> "小鸡鸡今天累了，明天再陪你聊天吧。"<span ;="" <="" span=""><span break<="" span=""><span ;="" <="" span=""><span case<="" span=""> 2:
                    <span return<="" span=""> "小鸡鸡睡觉喽~~"<span ;="" <="" span=""><span break<="" span=""><span ;="" <="" span=""><span case<="" span=""> 3:
                    <span return<="" span=""> "呼呼~~呼呼~~"<span ;="" <="" span=""><span break<="" span=""><span ;="" <="" span=""><span case<="" span=""> 4:
                    <span return<="" span=""> "你话好多啊，不跟你聊了"<span ;="" <="" span=""><span break<="" span=""><span ;="" <="" span=""><span case<="" span=""> 5:
                    <span return<="" span=""> "感谢您关注【卓锦苏州】"."\n"."微信号：zhuojinsz"."\n"."卓越锦绣，万代不朽"<span ;="" <="" span=""><span break<="" span=""><span ;="" <="" span=""><span default<="" span="">:
                    <span return<="" span=""> "感谢您关注【卓锦苏州】"."\n"."微信号：zhuojinsz"."\n"."卓越锦绣，万代不朽"<span ;="" <="" span=""><span break<="" span=""><span ;="" }="" }<="" span=""></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

说明：

因为有时候小黄鸡不回复，所以在simsim() 函数中加入了一个判断，如果$response 不为空，则返回$response；如果$response 为空，则加了一个小小的代码，让其随机回复自定义的消息，这样就可以做到有求必应了。

5.2 调用小九机器人实现

小九机器人不提供API，故只能通过网页抓取，代码如下：

    <span <="" span=""><span 小九机器人<="" span="">
    <span public<="" span=""> <span function<="" span=""> xiaojo(<span $keyword<="" span=""><span ){="" <="" span=""><span $curlpost<="" span="">=<span array<="" span="">("chat"=><span $keyword<="" span=""><span );="" <="" span=""><span $ch<="" span=""> = curl_init();<span <="" span=""><span 初始化curl<="" span="">
        curl_setopt(<span $ch<="" span="">, CURLOPT_URL,'http://www.xiaojo.com/bot/chata.php');<span <="" span=""><span 抓取指定网页<="" span="">
        curl_setopt(<span $ch<="" span="">, CURLOPT_HTTPHEADER, <span $header<="" span=""><span );="" curl_setopt(<="" span=""><span $ch<="" span="">, CURLOPT_HEADER, 0);<span <="" span=""><span 设置header<="" span="">
        curl_setopt(<span $ch<="" span="">, CURLOPT_RETURNTRANSFER, 1);<span <="" span=""><span 要求<="" pre="">结果为字符串且</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>