本文实例为大家分享了微信开发php代码，供大家参考，具体内容如下

<?php //封装成一个微信接口类 class WeixinApi { private $appid; private $appsecret; //构造方法 初始化赋值 public function __construct($appid="",$appsecret="") { $this->appid = $appid; $this->appsecret = $appsecret; } //验证服务器地址有效性 public function valid() { if($this->checkSignature()) { $echostr = $_GET['echostr'];//随机的字符串 return $echostr; } else { return "Error"; } } //检查签名 private function checkSignature() { //一、接收微信服务器GET方式提交过来的4个参数数据 $signature = $_GET['signature'];//微信加密签名 $timestamp = $_GET['timestamp'];//时间戳 $nonce = $_GET['nonce'];//随机数 //二、加密/校验过程 // 1. 将token、timestamp、nonce三个参数进行字典序排序； // bool sort ( array &$array [, int $sort_flags = SORT_REGULAR ] ) 对数组排序 $tmpArr = array(TOKEN,$timestamp,$nonce);//将上面三个参数放到一个数组里面 sort($tmpArr,SORT_STRING); // 2. 将三个参数字符串拼接成一个字符串进行sha1加密； $tmpStr = implode($tmpArr); //将数组转化成字符串 $signatureStr = sha1($tmpStr); // 3. 开发者获得加密后的字符串与signature对比。 if($signatureStr == $signature) { return true; } else { return false; } } //响应消息 public function responseMsg() { //接收微信服务器发送POST请求到开发者服务器，携带的XML数据包 $postData = $GLOBALS['HTTP_RAW_POST_DATA']; //处理xml数据包 $xmlObj = simplexml_load_string($postData,"SimpleXMLElement",LIBXML_NOCDATA); if(!$xmlObj) { echo ""; exit; } //获取接收消息中的参数内容 $toUserName = $xmlObj->ToUserName;//开发者微信号 $fromUserName = $xmlObj->FromUserName;//发送方的微信号（openid） $msgType = $xmlObj->MsgType;//消息类型 switch ($msgType) { //接收文本消息 case 'text': //获取文本消息的关键字 $keyword = $this->receiveText($xmlObj); //进行关键字回复 switch($keyword) { case "w001": case "W001": return $this->replyText($xmlObj,"Hi~你好"); break; case "w002": case "W002": return $this->replyText($xmlObj,"Hi~尴尬了"); break; case "笑话": $key = "dee9ebc68fd5a61f67286063932afe56"; return $this->replyNews($xmlObj,$this->joke_text($key)); break; default: $key = "dee9ebc68fd5a61f67286063932afe56"; return $this->replyNews($xmlObj,$this->joke_text($key)); break; } break; //接收图片消息 case 'image': return $this->receiveImage($xmlObj); break; //接收事件推送 case 'event': return $this->receiveEvent($xmlObj); break; } } //接收事件推送 public function receiveEvent($obj) { //接收事件类型 $event = $obj->Event; switch ($event) { //关注事件 case 'subscribe': //下发欢迎消息 $newsArr = array( array( "Title"=>"做有价值的头条资讯！", "Description"=>"把握价值头条资讯，日常更加有谈资呢！", "PicUrl"=>"http://jober.applinzi.com/news/img/news.png", "Url"=>"http://jober.applinzi.com/news/index.php" ) ); //回复图文消息 return $this->replyNews($obj,$newsArr); break; //取消关注事件 case 'unsubscribe': //账号的解绑操作等等 break; //自定义菜单推送CLICK事件 case 'CLICK': $eventKey = $obj->EventKey;//获取事件KEY值，与自定义菜单接口中KEY值对应 switch ($eventKey) { case 'old': $weixinArr = $this->history("da675ebc6a0d72920dca3f676122a693"); $weixinArr = array_slice($weixinArr, 0,5); $newsArr = array(); foreach ($weixinArr as $item) { $newsArr = array(array( "Title" => $item['Description'], "Description" => $item['Title'], "PicUrl" => "http://1.jober.applinzi.com/news/img/2.jpg", "Url" => "http:///cgi-bin/menu/delete?access_token={$access_token}"; return $this->https_request($url); } }?>

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