chatgpt接入公众号聊天功能（php版）

<?php
header("Content-type: text/html; charset=utf-8");
$nonce = $_GET['nonce'];
$token = 'weixin'; //此处对接上图你公众号后台的token值
$timestamp = $_GET['timestamp'];
if (isset($_GET['echostr'])) {
if (bindServerCheck()) {
echo $_GET['echostr'];
}
exit();
}
responseMsg();
//消息回复
function responseMsg() {
//1.获取到微信推送过来post数据（xml格式）
$postArr = file_get_contents("php://input");

//libxml_disable_entity_loader(true);
//2.处理消息类型，并设置回复类型和内容
$postObj = simplexml_load_string($postArr, 'SimpleXMLElement', LIBXML_NOCDATA);
//判断该数据包是否是订阅de事件推送
if (strtolower($postObj->MsgType) == 'event') {
//如果是关注 subscribe事件

if (strtolower($postObj->Event) == 'subscribe') {
$toUser = $postObj->FromUserName;
$fromUser = $postObj->ToUserName;
$time = time();
$msgType = 'text';
$content = '欢迎关注公众号"优派编程"，定期分享编程干货！
若有疑问联系微信号：fbao9394
直接回复消息，如搜索关键词：“python”，即可领取python课程的学习资料！
个人it博客：<a href="http://wp.fang1688.cn">知识学堂---博客的入口地址</a>';




//修改为
if (is_utf8($content)) {
$content = $content;
} else {
$content = iconv('gb2312', 'UTF-8//IGNORE', $content);
}

$template = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[%s]]></MsgType>
<Content><![CDATA[%s]]></Content>
</xml>";
$info = sprintf($template, $toUser, $fromUser, $time, $msgType, $content);
echo $info;
}




}



if (strtolower($postObj->MsgType) == 'text') {
//如果是关注 subscribe事件

// if (strtolower($postObj->Event) == 'subscribe') {
$toUser = $postObj->FromUserName;
$fromUser = $postObj->ToUserName;
$time = time();
$msgType = 'text';
$keyword = trim($postObj->Content);





//此处$link就是上面php接入chatgpt的接口地址，改成你自己的接口地址！
$link='https://hk.wxnodes.cn/wxCo.php?q='.$keyword;
$html = file_get_contents($link);
$content =$html;




//修改为
if (is_utf8($content)) {
$content = $content;
} else {
$content = iconv('gb2312', 'UTF-8//IGNORE', $content);
}

$template = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[%s]]></MsgType>
<Content><![CDATA[%s]]></Content>
</xml>";
$info = sprintf($template, $toUser, $fromUser, $time, $msgType, $content);
echo $info;
// }




}








}


// 开发者模式绑定校验
function bindServerCheck($token) {
$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
$tmpArr = array(
$token,
$timestamp,
$nonce
);
sort($tmpArr);
$tmpStr = implode($tmpArr);
$tmpStr = sha1($tmpStr);
if ($tmpStr == $signature) {
return true;
} else {
return false;
}
}




function to_utf8($in)
{
if (is_array($in)) {
foreach ($in as $key => $value) {
$out[to_utf8($key)] = to_utf8($value);
}
} elseif(is_string($in)) {
if(mb_detect_encoding($in) != "UTF-8")
return utf8_encode($in);
else
return $in;
} else {
return $in;
}
return $out;
}




function is_utf8($str)
{
return preg_match('//u', $str);
}

function music($url,$tetle,$des) {
$MusicUrl=$url;
$tetle=$tetle;
$des=$des;
$textTpl = " <xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[%s]]></MsgType>
<Music>
<Title><![CDATA[$tetle]]></Title>
<Description><![CDATA[$des]]></Description>
<MusicUrl><![CDATA[$MusicUrl]]></MusicUrl>
<HQMusicUrl><![CDATA[$MusicUrl]]></HQMusicUrl>
</Music>
<FuncFlag>0</FuncFlag>
</xml>";
$msgType = "music";

$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
echo $resultStr;
}


?>

$token = 'weixin'; //此处对接上图你公众号后台的token值

//此处$link就是上面php接入chatgpt的接口地址，改成你自己的接口地址！这里下面  https://hk.wxnodes.cn/wxCo.php?q=  是参考值

$link='https://hk.wxnodes.cn/wxCo.php?q='.$keyword;