Justin's Words

微信公众平台信息处理(PHP)

Posted on | In |

后台是 PHP 处理的，主要是获取接收到的信息类型还有组织发出的信息。

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<?php
class MsgProcess
{
    private $fromUserName;
    private $toUserName;
    private $createTime;
    private $msgId;

    // media message
    private $mediaId;

    // text message
    private $content;

    // image message
    private $picUrl;

    // voice message
    private $format;

    // video or short video message
    private $thumbMediaId;

    // location message
    private $location_X;
    private $location_Y;
    private $scale;
    private $label;

    // link message
    private $title;
    private $description;
    private $url;

    // set variables from php://input
    public function __construct() {
        $postStr = file_get_contents("php://input");
        if (empty($postStr)) {
            exit;
        }

        $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
        $this->fromUserName = $postObj->FromUserName;
        $this->toUserName = $postObj->ToUserName;
        $this->msgType = $postObj->MsgType;
        $this->createTime = $postObj->CreateTime;
        $this->msgId = $postObj->MsgId;

//        $this->fromUserName = $_POST['FromUserName'];
//        $this->toUserName = $_POST['ToUserName'];
//        $this->msgType = $_POST['MsgType'];
//        $this->createTime = $_POST['CreateTime'];
//        $this->msgId = $_POST['MsgId'];

        switch ($this->msgType) {
            case "text":
                $this->content = trim($postObj->Content);
//                $this->content = trim($_POST['Content']);
                break;
            case "image":
                $this->picUrl = $postObj->PicUrl;
                $this->mediaId = $postObj->MediaId;
//                $this->picUrl = $_POST['PicUrl'];
//                $this->mediaId = $_POST['MediaId'];
                break;
            case "voice":
                $this->mediaId = $postObj->MediaId;
                $this->format = $postObj->Format;
//                $this->mediaId = $_POST['MediaId'];
//                $this->format = $_POST['Format'];
                break;
            case "video":
            case "shortvideo":
                $this->mediaId = $postObj->MediaId;
                $this->thumbMediaId = $postObj->ThumbMediaId;
//                $this->mediaId = $_POST['MediaId'];
//                $this->thumbMediaId = $_POST['ThumbMediaId'];
                break;
            case "link":
                $this->title = $postObj->Title;
                $this->description = $postObj->Description;
                $this->url = $postObj->Url;
//                $this->title = $_POST['Title'];
//                $this->description = $_POST['Description'];
//                $this->url = $_POST['Url'];
                break;
            case "location":
                $this->location_X = $postObj->Location_X;
                $this->location_Y = $postObj->Location_Y;
                $this->scale = $postObj->Scale;
                $this->label = $postObj->Label;
                break;
        }
    }

    // get message type
    public function getMsgType() {
        return $this->msgType;
    }

    // get message
    public function getMsg() {
        switch ($this->msgType) {
            case "text":
                return $this->content;
            case "image":
                return array(
                    'PicUrl' => $this->picUrl,
                    'MediaId' => $this->mediaId,
                );
            case "voice":
                return array(
                    'MediaId' => $this->mediaId,
                    'Format' => $this->format,
                );
            case "video":
            case "shortvideo":
                return array(
                    'MediaId' => $this->mediaId,
                    'ThumbMediaId' => $this->thumbMediaId,
                );
            case 'location':
                return array(
                    'Location_X' => $this->location_X,
                    'Location_Y' => $this->location_Y,
                    'Scale' => $this->scale,
                    'Label' => $this->label,
                );
            case "link":
                return array(
                    'Title' => $this->title,
                    'Description' => $this->description,
                    'Url' => $this->url,
                );
        }
    }

    // response in text
    public function resText($contentStr) {
        $textTpl = "<xml>
                    <ToUserName><![CDATA[%s]]></ToUserName>
                    <FromUserName><![CDATA[%s]]></FromUserName>
                    <CreateTime>%s</CreateTime>
                    <MsgType><![CDATA[%s]]></MsgType>
                    <Content><![CDATA[%s]]></Content>
                    </xml>";

        $time = time();
        $msgType = "text";
        $res = sprintf($textTpl, $this->fromUserName, $this->toUserName, $time, $msgType, $contentStr);
        echo $res;
    }

    // response in image
    public function resImage($mediaId) {
        $imageTpl = "<xml>
                    <ToUserName><![CDATA[%s]]></ToUserName>
                    <FromUserName><![CDATA[%s]]></FromUserName>
                    <CreateTime>%s</CreateTime>
                    <MsgType><![CDATA[%s]]></MsgType>
                    <Image>
                        <MediaId><![CDATA[%s]]></MediaId>
                    </Image>
                    </xml>";

        $time = time();
        $msgType = "image";
        $res = sprintf($imageTpl, $this->fromUserName, $this->toUserName, $time, $msgType, $mediaId);
        echo $res;
    }

    public function resVoice($mediaId) {
        $voiceTpl = "<xml>
                    <ToUserName><![CDATA[%s]]></ToUserName>
                    <FromUserName><![CDATA[%s]]></FromUserName>
                    <CreateTime>%s</CreateTime>
                    <MsgType><![CDATA[%s]]></MsgType>
                    <Voice>
                        <MediaId><![CDATA[%s]]></MediaId>
                    </Voice>
                    </xml>";

        $time = time();
        $msgType = "voice";
        $res = sprintf($voiceTpl, $this->fromUserName, $this->toUserName, $time, $msgType, $mediaId);
        echo $res;
    }

    public function resVideo($mediaId, $title, $description) {
        $videoTpl = "<xml>
                    <ToUserName><![CDATA[%s]]></ToUserName>
                    <FromUserName><![CDATA[%s]]></FromUserName>
                    <CreateTime>%s</CreateTime>
                    <MsgType><![CDATA[%s]]></MsgType>
                    <Video>
                        <MediaId><![CDATA[%s]]></MediaId>
                        <Title><![CDATA[%s]]></Title>
                        <Description><![CDATA[%s]]></Description>
                    </Video>
                    </xml>";

        $time = time();
        $msgType = "video";
        $res = sprintf($videoTpl, $this->fromUserName, $this->toUserName, $time, $msgType, $mediaId, $title, $description);
        echo $res;
    }

    public function resMusic($title, $description, $musicUrl, $HQMusicUrl, $thumbMediaId) {
        $musictpl = "<xml>
            <ToUserName><![CDATA[%s]]></ToUserName>
            <FromUserName><![CDATA[%s]]></FromUserName>
            <CreateTime>%s</CreateTime>
            <MsgType><![CDATA[%s]]></MsgType>
            <Music>
                <Title><![CDATA[%s]]></Title>
                <Description><![CDATA[%s]]></Description>
                <MusicUrl><![CDATA[%s]]></MusicUrl>
                <HQMusicUrl><![CDATA[%s]]></HQMusicUrl>
                <ThumbMediaId><![CDATA[%s]]></ThumbMediaId>
            </Music>
            </xml>";

        $time = time();
        $msgType = "music";
        $res = sprintf($musictpl, $this->fromUserName, $this->toUserName, $time, $msgType, $title, $description, $musicUrl, $HQMusicUrl, $thumbMediaId);
        echo $res;
    }

    /*
        * $newsArr = array(
            array(
                'Title' => '',
                'Description' => '',
                'PicUrl' => '',
                'Url' => '',
            ),
            array(
                'Title' => '',
                'Description' => '',
                'PicUrl' => '',
                'Url' => '',
            ),
        );
        */
    public function resArticle($newsArr) {
        if (sizeof($newsArr) > 10) {
            echo "must be less than 10 articles!";
            exit;
        }

        $res = "";
        $newsCount = 0;

        $resHeadTpl = "<xml>
                    <ToUserName><![CDATA[%s]]></ToUserName>
                    <FromUserName><![CDATA[%s]]></FromUserName>
                    <CreateTime>%s</CreateTime>
                    <MsgType><![CDATA[%s]]></MsgType>
                    <ArticleCount>%s</ArticleCount>
                    <Articles>";

        $resItemTpl = "<item>
                    <Title><![CDATA[%s]]></Title>
                    <Description><![CDATA[%s]]></Description>
                    <PicUrl><![CDATA[%s]]></PicUrl>
                    <Url><![CDATA[%s]]></Url>
                    </item>";

        $resFooterTpl = "</Articles>
                        </xml>";

        $res = $res . $resHeadTpl;

        foreach ($newsArr as $item) {
            $resItem = sprintf($resItemTpl, $item['Title'], $item['Description'], $item['PicUrl'], $item['Url']);
            $res = $res . $resItem;
            $newsCount++;
        }

        $res = $res . $resFooterTpl;

        $time = time();
        $msgType = 'news';
        $res = sprintf($res, $this->fromUserName, $this->toUserName, $time, $msgType, $newsCount);
        echo $res;
    }
}