php如何进行微信公众号开发
1、配置相关服务器
（1） 如下，把自己的服务器ip白名单配置上；
（2） 开始配置令牌，配置令牌时先需要把现成的代码放到自己的服务器上面，代码里面包含自己的设置的令牌号码，这样才可以配置成功。
注意：下面这个代码在配置好后，即可从服务器上面删除代码或者把index.php改一个名字。
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url必须是完整的url,比如 http://118.78.176.74/weixin/index.php
valid();
class wechatCallbackapiTest
{
public function valid()
{
$echoStr = $_GET["echostr"];
//valid signature , option
if ($this->checkSignature()) {
echo $echoStr;
exit;
}
}
public function responseMsg()
{
//get post data, May be due to the different environments
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
//extract post data
if (!empty($postStr)) {
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
$fromUsername = $postObj->FromUserName;
$toUsername = $postObj->ToUserName;
$keyword = trim($postObj->Content);
$time = time();
$textTpl = "
%s
0
";
if (!empty($keyword)) {
$msgType = "text";
$contentStr = "Welcome to wechat world!";
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
echo $resultStr;
} else {
echo "Input something...";
}
} else {
echo "";
exit;
}
}
private function checkSignature()
{
$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
$token = TOKEN;
$tmpArr = array($token, $timestamp, $nonce);
sort($tmpArr, SORT_STRING);
$tmpStr = implode($tmpArr);
$tmpStr = sha1($tmpStr);
if ($tmpStr == $signature) {
return true;
} else {
return false;
}
}
}2、配置ok后，接下来就可以实现相关的微信公众号相关功能，比如说自动回复机器人。
代码包含3部分，当然，自动回复机器人，下面的代码有些用不到。
(1) 、index.php
responseMsg(); ?>
(2)、wechat.inc.php
_appid = $appid;
$this->_appsecret = $appsecret;
$this->_token = $token;
}
/**
*_request():发出请求
*@curl:访问的URL
*@https：安全访问协议
*@method：请求的方式，默认为get
*@data：post方式请求时上传的数据
**/
private function _request($curl, $https = true, $method = 'get', $data = null, $headers = null)
{
$ch = curl_init(); //初始化
curl_setopt($ch, CURLOPT_URL, $curl); //设置访问的URL
// curl_setopt($ch, CURLOPT_HEADER, false); //设置不需要头信息
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); //只获取页面内容，但不输出
if ($https) {
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //不做服务器认证
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); //不做客户端认证
}
if ($method == 'post') {
curl_setopt($ch, CURLOPT_POST, true); //设置请求是POST方式
curl_setopt($ch, CURLOPT_POSTFIELDS, $data); //设置POST请求的数据
}
$str = curl_exec($ch); //执行访问，返回结果
curl_close($ch); //关闭curl，释放资源
return $str;
}
/**
*_getAccesstoken()：获取access token
**/
private function _getAccesstoken()
{
$file = './accesstoken'; //用于保存access token
if (file_exists($file)) { //判断文件是否存在
$content = file_get_contents($file); //获取文件内容
$content = json_decode($content); //json解码
if (time() - filemtime($file) < $content->expires_in) //判断文件是否过期
{
return $content->access_token;
}
//返回access token
}
$content = $this->_request("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" . $this->_appid . "&secret=" . $this->_appsecret); //获取access token的json对象
file_put_contents($file, $content); //保存json对象到指定文件
$content = json_decode($content); //进行json解码
return $content->access_token; //返回access token
}
/**
*_getTicket():获取ticket，用于以后换取二维码
*@expires_secords：二维码有效期（秒）
*@type ：二维码类型（临时或永久）
*@scene：场景编号
**/
public function _getTicket($expires_secords = 604800, $type = "temp", $scene = 1)
{
if ($type == "temp") { //临时二维码的处理
$data = '{"expire_seconds":' . $expires_secords . ', "action_name": "QR_SCENE", "action_info": {"scene": {"scene_id": ' . $scene . '}}}'; //临时二维码生成所需提交数据
return $this->_request("https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=" . $this->_getAccesstoken(), true, "post", $data, ''); //发出请求并获得ticket
} else { //永久二维码的处理
$data = '{"action_name": "QR_LIMIT_SCENE", "action_info": {"scene": {"scene_id": ' . $scene . '}}}'; //永久二维码生成所需提交数据
return $this->_request("https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=" . $this->_getAccesstoken(), true, "post", $data, ''); //发出请求并获得ticket
}
}
/**
*_getQRCode():获取二维码
*@expires_secords：二维码有效期（秒）
*@type：二维码类型
*@scene：场景编号
**/
public function _getQRCode($expires_secords, $type, $scene)
{
$content = json_decode($this->_getTicket($expires_secords, $type, $scene)); //发出请求并获得ticket的json对象
$ticket = $content->ticket; //获取ticket
$image = $this->_request("https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=" . urlencode($ticket)
); //发出请求获得二维码图像
//$file = "./".$type.$scene.".jpg";// 可以将生成的二维码保存到本地，便于使用
//file_put_contents($file, $image);//保存二维码
return $image;
}
public function valid() //检查安全性
{
$echoStr = $_GET["echostr"];
//valid signature , option
if ($this->checkSignature()) {
echo $echoStr;
exit;
}
}
public function responseMsg()
{
//get post data, May be due to the different environments
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; //获得用户发送信息
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
switch ($postObj->MsgType) {
case 'event':
$this->_doEvent($postObj);
break;
case 'text':
$this->_doText($postObj);
break;
case 'image':
$this->_doImage($postObj);
break;
case 'voice':
$this->_doVoice($postObj);
break;
case 'video':
$this->_doVideo($postObj);
break;
case 'location':
$this->_doLocation($postObj);
break;
default:exit;
}
}
private function _doEvent($postObj)
{ //事件处理
switch ($postObj->Event) {
case 'subscribe': //订阅
$this->_doSubscribe($postObj);
break;
case 'unsubscribe': //取消订阅
$this->_doUnsubscribe($postObj);
break;
default:;
}
}
private function _doSubscribe($postObj)
{
$tpltext = '
%s
';
$access_token = $this->_getAccesstoken();
$userInfo = $this->getUserinfo($access_token, $postObj->FromUserName);
$str = sprintf($tpltext, $postObj->FromUserName, $postObj->ToUserName, time(), '欢迎您关注' . 'Geroge Zhang' . '的世界！');
//还可以保存用户的信息到数据库
echo $str;
}
private function _doUnsubscribe($postObj)
{
; //把用户的信息从数据库中删除
}
private function _doText($postObj)
{
$fromUsername = $postObj->FromUserName;
$toUsername = $postObj->ToUserName;
$keyword = trim($postObj->Content);
$time = time();
$textTpl = "
%s
0
";
if (!empty($keyword)) {
// $data_add = "question=" . $keyword;
// $appcode = "2fd264cdc7914b308e51ab986f73fb86";
// $headers = array();
// array_push($headers, "Authorization:APPCODE " . $appcode);
// $contentStr = $this->_request("http://jisuznwd.market.alicloudapi.com/iqa/query?question=" . $data_add, false, "GET", '', $headers);
$data_add = urlencode($keyword);
$contentStr = $this->_request("http://api.qingyunke.com/api.php?key=free&appid=0&msg=" . $data_add, false, "GET", '', '');
$contentStr = json_decode($contentStr, true);
if ($contentStr['result'] == 0) {
$contentStr = $contentStr['content'];
}
if ($keyword == "hello") {
$contentStr = "你好";
}
if ($keyword == "PHP") {
$contentStr = "最流行的网页编程语言！";
}
if ($keyword == "JAVA") {
$contentStr = "较流行的网页编程语言！";
}
$msgType = "text";
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
echo $resultStr;
}
exit;
}
private function _doImage($postObj)
{
$tpltext = '
%s
';
$str = sprintf($tpltext, $postObj->FromUserName, $postObj->ToUserName, time(), '您发送的图片在' . $postObj->PicUrl . "。");
echo $str;
}
private function checkSignature()
{
$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
$token = TOKEN;
$tmpArr = array($token, $timestamp, $nonce);
sort($tmpArr, SORT_STRING);
$tmpStr = implode($tmpArr);
$tmpStr = sha1($tmpStr);
if ($tmpStr == $signature) {
return true;
} else {
return false;
}
}
/**
* 获取用户昵称
* @param access_token 前面函数_getAccesstoken已经实现
* @param openid 即FromUserName这个参数
* url $urlid = 'https://api.weixin.qq.com/cgi-bin/user/info?access_token='.$access_token.'&openid='.$openid.'&lang=zh_CN';
* return userInfo
*/
public function getUserinfo($access_token, $openid)
{
$urlid = 'https://api.weixin.qq.com/cgi-bin/user/info?access_token=' . $access_token . '&openid=' . $openid . '&lang=zh_CN';
$userInfo = $this->_request($urlid);
return $userInfo;
}
}注意：想要获取用户信息必须是认证过了的订阅号或者服务号！
综上，把如上三个文件，放到你的配置的服务器上面，即可实现自动回复机器人功能。
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