微信公众号对接开发api自动回复功能，包含文字回复以及图文回复

php 代码，直接上代码

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
<?php
/**
 * by：小灰灰
 * 接口配置信息：
 * URL：http://******.com/api/wx/valid
 * Token：123456
 */

// 接收参数
define("TOKEN", '123456');

$wechatObj = new wx();
if (isset($_GET['echostr'])) {
    $wechatObj->valid();
} else {
    $wechatObj->responseMsg();
}

class wx
{

    /**
     * 微信公众号验证
     */
    public function valid()
    {
        $echoStr = $_GET["echostr"];
        if ($this->checkSignature()) {
            echo $echoStr;
            exit;
        }
    }

    /**
     * 回复消息
     */
    public function responseMsg()
    {
        $postArr = file_get_contents("php://input");
        $postObj = simplexml_load_string($postArr, 'SimpleXMLElement', LIBXML_NOCDATA);

        $msgType  = $postObj->MsgType;
        $toUser   = $postObj->FromUserName;
        $fromUser = $postObj->ToUserName;

        //判断该数据包是否是订阅的事件推送
        if (strtolower($msgType) == 'event') {
            if ($postObj->Event == 'subscribe') { //如果是订阅事件
                $followMeText = "这里可以设置默认关注回复词哦";
                if (empty($followMeText)) {
                    $followMeText = "嘻嘻，最近小编花了好大时间做了这个自动回复功能！现在可以直接回复关键词就ok拉！";
                }
                $contentStrq = $content = $followMeText;
                $this->subscribeMsg($contentStrq, $toUser, $fromUser);
            }
        } else {
            $content = trim($postObj->Content);

            $resData = [
                [
                    'title'       => '这是title',
                    'pic_url'     => '',
                    'description' => '这是描述',
                    'link'        => 'https://baidu.com'
                ],
                [
                    'title'       => '最新ChatGPT4免费使用教程。免登录直接就可以使用了。',
                    'pic_url'     => 'https://i0.hdslb.com/bfs/archive/3bd476e6e008cf38e274adf63276da189dbf7aae.jpg@336w_190h_!web-video-rcmd-cover.webp',
                    'description' => '最新ChatGPT4免费使用教程。免登录直接就可以使用了。',
                    'link'        => 'https://www.bilibili.com/video/BV1UN411J7Ct/?spm_id_from=333.1007.tianma.1-1-1.click'
                ]
            ];
            if (empty($resData)) {
                $resText = "这里设置，如果没有获取到数据，回复的词";
                $this->responseTextMsg($resText, $toUser, $fromUser);
            } else {
                $this->responseImageNewsMsg($resData, $toUser, $fromUser);
            }
        }
    }

    //关注
    private function subscribeMsg($content, $toUser, $fromUser)
    {
        $template = <<<EOXML
        <xml>
            <ToUserName><![CDATA[%s]]></ToUserName>
            <FromUserName><![CDATA[%s]]></FromUserName>
            <CreateTime>%s</CreateTime>
            <MsgType><![CDATA[%s]]></MsgType>
            <Content><![CDATA[%s]]></Content>
        </xml>
EOXML;
        echo sprintf($template, $toUser, $fromUser, time(), 'text', $content);
        die();
    }

    /**
     * responseImageMsg
     *
     * @param $msg
     * @param $toUser
     * @param $fromUser
     *
     * @return string
     */
    function responseImageNewsMsg($msg, $toUser, $fromUser)
    {
        $arr      = $msg;
        $template = "<xml>
            <ToUserName><![CDATA[%s]]></ToUserName>
            <FromUserName><![CDATA[%s]]></FromUserName>
            <CreateTime>%s</CreateTime>
            <MsgType><![CDATA[%s]]></MsgType>
            <ArticleCount>".count($arr)."</ArticleCount>
        <Articles>";
        foreach ($arr as $k => $v) {
            $template .= "<item>
                <Title><![CDATA[".$v['title']."]]></Title>
                <Description><![CDATA[".$v['description']."]]></Description>
                <PicUrl><![CDATA[".$v['pic_url']."]]></PicUrl>
                <Url><![CDATA[".$v['link']."]]></Url>
            </item>";
        }
        $template .= "</Articles>";
        $template .= "</xml>";

        echo sprintf($template, $toUser, $fromUser, time(), 'news');
        die();
    }

    /**
     * @param $content
     * @param $toUser
     * @param $fromUser
     */
    function responseTextMsg($content, $toUser, $fromUser)
    {
        $msgType = 'text';
        //修改为
        if ( ! is_utf8($content)) {
            $content = iconv('gb2312', 'UTF-8//IGNORE', $content);
        }
        $template = <<<EOXML
        <xml>
            <ToUserName><![CDATA[%s]]></ToUserName>
            <FromUserName><![CDATA[%s]]></FromUserName>
            <CreateTime>%s</CreateTime>
            <MsgType><![CDATA[%s]]></MsgType>
            <Content><![CDATA[%s]]></Content>
        </xml>
EOXML;
        echo sprintf($template, $toUser, $fromUser, time(), $msgType, $content);
        die();
    }

    private function checkSignature()
    {
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce     = $_GET["nonce"];

        $token  = TOKEN;
        $tmpArr = array($token, $timestamp, $nonce);
        sort($tmpArr);
        $tmpStr = implode($tmpArr);
        $tmpStr = sha1($tmpStr);

        if ($tmpStr == $signature) {
            return true;
        } else {
            return false;
        }
    }

}