微信公众平台开发接口PHP SDK完整版

代码如下：

更新日志：

2013-01-01 版本1.0
2014-03-15 增加图片、视频、语音的内容回复
2014-04-09 增加菜单链接事件
2014-04-10 修改文本回复的判定方法

<?php
/*
    方倍工作室
    copyright 2014 all rights reserved
*/

define("token", "weixin");

$wechatobj = new wechatcallbackapitest();
if (!isset($_get['echostr'])) {
    $wechatobj->responsemsg();
}else{
    $wechatobj->valid();
}

class wechatcallbackapitest
{
    //验证消息
    public function valid()
    {
        $echostr = $_get["echostr"];
        if($this->checksignature()){
            echo $echostr;
            exit;
        }
    }

    //检查签名
    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;
        }
    }

    //响应消息
    public function responsemsg()
    {
        $poststr = $globals["http_raw_post_data"];
        if (!empty($poststr)){
            $this->logger("r ".$poststr);
            $postobj = simplexml_load_string($poststr, 'simplexmlelement', libxml_nocdata);
            $rx_type = trim($postobj->msgtype);

            switch ($rx_type)
            {
                case "event":
                    $result = $this->receiveevent($postobj);
                    break;
                case "text":
                    $result = $this->receivetext($postobj);
                    break;
                case "image":
                    $result = $this->receiveimage($postobj);
                    break;
                case "location":
                    $result = $this->receivelocation($postobj);
                    break;
                case "voice":
                    $result = $this->receivevoice($postobj);
                    break;
                case "video":
                    $result = $this->receivevideo($postobj);
                    break;
                case "link":
                    $result = $this->receivelink($postobj);
                    break;
                default:
                    $result = "unknow msg type: ".$rx_type;
                    break;
            }
            $this->logger("t ".$result);
            echo $result;
        }else {
            echo "";
            exit;
        }
    }

    //接收事件消息
    private function receiveevent($object)
    {
        $content = "";
        switch ($object->event)
        {
            case "subscribe":
                $content = "欢迎关注方倍工作室 ";
                $content .= (!empty($object->eventkey))?("\n来自二维码场景 ".str_replace("qrscene_","",$object->eventkey)):"";
                break;
            case "unsubscribe":
                $content = "取消关注";
                break;
            case "scan":
                $content = "扫描场景 ".$object->eventkey;
                break;
            case "click":
                switch ($object->eventkey)
                {
                    case "company":
                        $content = "方倍工作室提供互联网相关产品与服务。";
                        break;
                    default:
                        $content = "点击菜单：".$object->eventkey;
                        break;
                }
                break;
            case "location":
                $content = "上传位置：纬度 ".$object->latitude.";经度 ".$object->longitude;
                break;
            case "view":
                $content = "跳转链接 ".$object->eventkey;
                break;
            default:
                $content = "receive a new event: ".$object->event;
                break;
        }
        $result = $this->transmittext($object, $content);
        return $result;
    }

    //接收文本消息
    private function receivetext($object)
    {
        switch ($object->content)
        {
            case "文本":
                $content = "这是个文本消息";
                break;
            case "图文":
            case "单图文":
                $content = array();
                $content[] = array("title"=>"单图文标题",  "description"=>"单图文内容", "picurl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "url" =>"http://m.cnblogs.com/?u=txw1958");
                break;
            case "多图文":
                $content = array();
                $content[] = array("title"=>"多图文1标题", "description"=>"", "picurl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "url" =>"http://m.cnblogs.com/?u=txw1958");
                $content[] = array("title"=>"多图文2标题", "description"=>"", "picurl"=>"http://d.hiphotos.bdimg.com/wisegame/pic/item/f3529822720e0cf3ac9f1ada0846f21fbe09aaa3.jpg", "url" =>"http://m.cnblogs.com/?u=txw1958");
                $content[] = array("title"=>"多图文3标题", "description"=>"", "picurl"=>"http://g.hiphotos.bdimg.com/wisegame/pic/item/18cb0a46f21fbe090d338acc6a600c338644adfd.jpg", "url" =>"http://m.cnblogs.com/?u=txw1958");
                break;
            case "音乐":
                $content = array("title"=>"最炫民族风", "description"=>"歌手：凤凰传奇", "musicurl"=>"http://121.199.4.61/music/zxmzf.mp3", "hqmusicurl"=>"http://121.199.4.61/music/zxmzf.mp3");
                break;
            default:
                $content = date("y-m-d h:i:s",time());
                break;
        }
        if(is_array($content)){
            if (isset($content[0]['picurl'])){
                $result = $this->transmitnews($object, $content);
            }else if (isset($content['musicurl'])){
                $result = $this->transmitmusic($object, $content);
            }
        }else{
            $result = $this->transmittext($object, $content);
        }
        return $result;
    }

    private function receiveimage($object)
    {
        $content = array("mediaid"=>$object->mediaid);
        $result = $this->transmitimage($object, $content);
        return $result;
    }

    private function receivelocation($object)
    {
        $content = "你发送的是位置，纬度为：".$object->location_x."；经度为：".$object->location_y."；缩放级别为：".$object->scale."；位置为：".$object->label;
        $result = $this->transmittext($object, $content);
        return $result;
    }

    private function receivevoice($object)
    {
        if (isset($object->recognition) && !empty($object->recognition)){
            $content = "你刚才说的是：".$object->recognition;
            $result = $this->transmittext($object, $content);
        }else{
            $content = array("mediaid"=>$object->mediaid);
            $result = $this->transmitvoice($object, $content);
        }

        return $result;
    }

    private function receivevideo($object)
    {
        $content = array("mediaid"=>$object->mediaid, "thumbmediaid"=>$object->thumbmediaid, "title"=>"", "description"=>"");
        $result = $this->transmitvideo($object, $content);
        return $result;
    }

    private function receivelink($object)
    {
        $content = "你发送的是链接，标题为：".$object->title."；内容为：".$object->description."；链接地址为：".$object->url;
        $result = $this->transmittext($object, $content);
        return $result;
    }

    private function transmittext($object, $content)
    {
        $texttpl = "<xml>
<tousername><![cdata[%s]]></tousername>
<fromusername><![cdata[%s]]></fromusername>
<createtime>%s</createtime>
<msgtype><![cdata[text]]></msgtype>
<content><![cdata[%s]]></content>
</xml>";
        $result = sprintf($texttpl, $object->fromusername, $object->tousername, time(), $content);
        return $result;
    }

    private function transmitimage($object, $imagearray)
    {
        $itemtpl = "<image>
    <mediaid><![cdata[%s]]></mediaid>
</image>";

        $item_str = sprintf($itemtpl, $imagearray['mediaid']);

        $texttpl = "<xml>
<tousername><![cdata[%s]]></tousername>
<fromusername><![cdata[%s]]></fromusername>
<createtime>%s</createtime>
<msgtype><![cdata[image]]></msgtype>
$item_str
</xml>";

        $result = sprintf($texttpl, $object->fromusername, $object->tousername, time());
        return $result;
    }

    private function transmitvoice($object, $voicearray)
    {
        $itemtpl = "<voice>
    <mediaid><![cdata[%s]]></mediaid>
</voice>";

        $item_str = sprintf($itemtpl, $voicearray['mediaid']);

        $texttpl = "<xml>
<tousername><![cdata[%s]]></tousername>
<fromusername><![cdata[%s]]></fromusername>
<createtime>%s</createtime>
<msgtype><![cdata[voice]]></msgtype>
$item_str
</xml>";

        $result = sprintf($texttpl, $object->fromusername, $object->tousername, time());
        return $result;
    }

    private function transmitvideo($object, $videoarray)
    {
        $itemtpl = "<video>
    <mediaid><![cdata[%s]]></mediaid>
    <thumbmediaid><![cdata[%s]]></thumbmediaid>
    <title><![cdata[%s]]></title>
    <description><![cdata[%s]]></description>
</video>";

        $item_str = sprintf($itemtpl, $videoarray['mediaid'], $videoarray['thumbmediaid'], $videoarray['title'], $videoarray['description']);

        $texttpl = "<xml>
<tousername><![cdata[%s]]></tousername>
<fromusername><![cdata[%s]]></fromusername>
<createtime>%s</createtime>
<msgtype><![cdata[video]]></msgtype>
$item_str
</xml>";

        $result = sprintf($texttpl, $object->fromusername, $object->tousername, time());
        return $result;
    }

    private function transmitnews($object, $newsarray)
    {
        if(!is_array($newsarray)){
            return;
        }
        $itemtpl = "    <item>
        <title><![cdata[%s]]></title>
        <description><![cdata[%s]]></description>
        <picurl><![cdata[%s]]></picurl>
        <url><![cdata[%s]]></url>
    </item>
";
        $item_str = "";
        foreach ($newsarray as $item){
            $item_str .= sprintf($itemtpl, $item['title'], $item['description'], $item['picurl'], $item['url']);
        }
        $newstpl = "<xml>
<tousername><![cdata[%s]]></tousername>
<fromusername><![cdata[%s]]></fromusername>
<createtime>%s</createtime>
<msgtype><![cdata[news]]></msgtype>
<content><![cdata[]]></content>
<articlecount>%s</articlecount>
<articles>
$item_str</articles>
</xml>";

        $result = sprintf($newstpl, $object->fromusername, $object->tousername, time(), count($newsarray));
        return $result;
    }

    private function transmitmusic($object, $musicarray)
    {
        $itemtpl = "<music>
    <title><![cdata[%s]]></title>
    <description><![cdata[%s]]></description>
    <musicurl><![cdata[%s]]></musicurl>
    <hqmusicurl><![cdata[%s]]></hqmusicurl>
</music>";

        $item_str = sprintf($itemtpl, $musicarray['title'], $musicarray['description'], $musicarray['musicurl'], $musicarray['hqmusicurl']);

        $texttpl = "<xml>
<tousername><![cdata[%s]]></tousername>
<fromusername><![cdata[%s]]></fromusername>
<createtime>%s</createtime>
<msgtype><![cdata[music]]></msgtype>
$item_str
</xml>";

        $result = sprintf($texttpl, $object->fromusername, $object->tousername, time());
        return $result;
    }

    private function logger($log_content)
    {
        if(isset($_server['http_appname'])){   //sae
            sae_set_display_errors(false);
            sae_debug($log_content);
            sae_set_display_errors(true);
        }else if($_server['remote_addr'] != "127.0.0.1"){ //local
            $max_size = 10000;
            $log_filename = "log.xml";
            if(file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)){unlink($log_filename);}
            file_put_contents($log_filename, date('h:i:s')." ".$log_content."\r\n", file_append);
        }
    }
}
?>