微信公众平台百度天气预报开发

来源：互联网发布：sql exists什么意思编辑：程序博客网时间：2024/04/26 23:49

1.登录百度ak申请：
http://lbsyun.baidu.com/apiconsole/key

2.实现天气信息功能

baiduWeather.php

<?php/** *  使用百度天气预报接口获取城市天气信息案例实现 */    //获取城市天气信息    function getWeatherInfo($cityName){        if($cityName == "" || (strstr($cityName,"+"))){            return "发送城市加天气,例如北京天气";        }        //获取到的ak        $ak = your ak;        //获取到的sk        $sk = your sk;        //调用接口        $url = 'http://api.map.baidu.com/telematics/v3/weather?ak=%s&location=%s&output=%s&sk=%s';        $uri = '/telematics/v3/weather';        $location = $cityName;        $output = 'json';        $querystring_arrays = array(            'ak' => $ak,            'location' => $location,            'output' => $output        );        $querystring = http_build_query($querystring_arrays);       //生成sn        $sn = md5(urlencode($uri.'?'.$querystring.$sk));        $targetUrl = sprintf($url,$ak,urlencode($location),$output,$sn);        $ch = curl_init();        curl_setopt($ch,CURLOPT_URL,$targetUrl);        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);        $result = curl_exec($ch);        curl_close($ch);        $result = json_decode($result,true);        if($result["error"]!=0){            return $result["status"];        }        $curHour = (int)date('H',time());        $weather = $result["results"][0];        $weatherArray[]=array("Title"=>$weather['currentCity']."天气预报","Description"=>"","PicUrl"=>"","Url"=>"");        for($i = 0;$i<count($weather["weather_data"]);$i++){            $weatherArray[] = array("Title"=>                $weather["weather_data"][$i]["date"]."\n".                $weather["weather_data"][$i]["weather"].                $weather["weather_data"][$i]["wind"].                $weather["weather_data"][$i]["temperature"],                "Description"=>"",                "PicUrl"=>(($curHour>=6)&&($curHour<                18))?$weather["weather_data"][$i]["dayPictureUrl"]:$weather["weather_data"][$i]["nightPictureUrl"],"URL"=>""            );        }        return $weatherArray;    }

3.实现天气消息事件

<?php/*    CopyRight 2016 All Rights Reserved*/define("TOKEN", "weixin");/** * 百度天气预报案例实现 * 实现思路： * 1.申请百度ak、sk * 2.使用百度天气预报接口 * 3.实现天气信息功能 * 4.实现事件响应功能 */$wechatObj = new wechatCallbackapiTest();if (!isset($_GET['echostr'])) {    $wechatObj->responseMsg();}else{    $wechatObj->valid();}class wechatCallbackapiTest{    //验证签名    public function valid()    {        $echoStr = $_GET["echostr"];        if($this->checkSignature()){header('content-type:text');            echo $echoStr;            exit;        }    }    public function checkSignature(){        $signature = $_GET["signature"];        $timestamp = $_GET["timestamp"];        $nonce = $_GET["nonce"];        $token = TOKEN;        $tmpArr = array($token, $timestamp, $nonce);        sort($tmpArr);        $tmpStr = implode($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);            //消息类型分离            switch ($RX_TYPE)            {                case "event":                    $result = $this->receiveEvent($postObj);                    break;                case "text":                    $result = $this->receiveText($postObj);                    break;                default:                    $result = "unknown msg type: ".$RX_TYPE;                    break;            }            echo $result;        }else {            echo "";            exit;        }    }    //接收事件消息    public function receiveEvent($object)    {        $content = "";        switch ($object->Event)        {            case "subscribe":                $content = "欢迎关注Nicky的公众号 ";                $content .= (!empty($object->EventKey))?("\n来自二维码场景 ".str_replace("qrscene_","",$object->EventKey)):"";                break;            case "unsubscribe":                $content = "取消关注";                break;        }        $result = $this->transmitText($object, $content);        return $result;    }    //接收文本消息    public function receiveText($object)    {        $keyword = trim($object->Content);        //自动回复模式        if (strstr($keyword, "天气")){            $city = str_replace('天气','',$keyword);            include("baiduweather.php");            $content = getWeatherInfo($city);        }        $result = $this->transmitNews($object, $content);        return $result;    }    //回复图文消息    public function transmitNews($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']);        }        $xmlTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[news]]></MsgType><ArticleCount>%s</ArticleCount><Articles>$item_str</Articles></xml>";        $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time(), count($newsArray));        return $result;    }    //日志记录    public function logger($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);        }    }}?>

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