PHP微信开发---城市天气查询

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首先,你需要找到一个获取天气的API,此处,我用的是百度的apistore,申请和使用API的网址:http://apistore.baidu.com/apiworks/servicedetail/112.html


登录百度账号,并用手机发送请求获取apikey。有了apikey,可以按照它的示例来请求城市天气了。(可以按照城市中文名,拼音,城市编号等来查询)




你可以现在本地做测试,请求完成之后,再放到自己的域名空间的脚本里。

测试的脚本例如:(注意apikey填写自己申请的)

header('Content-type:text/html;charset=UTF-8');$ch = curl_init();$url = 'http://apis.baidu.com/apistore/weatherservice/cityname?cityname=上海';$header = array(    'apikey: ',//你的apikey);// 添加apikey到headercurl_setopt($ch, CURLOPT_HTTPHEADER  , $header);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);// 执行HTTP请求curl_setopt($ch , CURLOPT_URL , $url);$res = curl_exec($ch);$res = json_decode($res, true);echo "<pre>";print_r($res);echo "</pre>";$contentStr = "";foreach($res as $k=>$v){    if($k == "retData"){        $contentStr = "城市:" . $v['city'] . "\n";        $contentStr .= "日期:" . $v['date'] . "\n";        $contentStr .= "天气:" . $v['weather'] ."\n";        $contentStr .= "平均气温:" . $v['temp'] . "℃\n";        $contentStr .= "最低气温:" . $v['l_tmp'] ."℃\n";        $contentStr .= "最高气温:" . $v['h_tmp'] . "℃\n";        $contentStr .= "风力:" . $v['WS'] . "\n";        $contentStr .= "风向:" . $v['WD'] . "\n";        $contentStr .= "日出时间:" . $v['sunrise'] . "\n";        $contentStr .= "日落时间:" . $v['sunset'] . "\n";        $contentStr .= "经度:" . $v['longitude'] . "\n";        $contentStr .= "纬度:" . $v['latitude'];    }}echo $contentStr;


如果你填写了自己的apikey,那么应该能获取到所请求的天气了:





如果能返回正常的数据了,那么就可以放到你的域名空间里了。(公众平台里开发者中心填写的url,该url有连接微信接口等功能)


如果你看不懂下面的代码或者第一次接触微信开发,可以参考:http://blog.csdn.net/misakaqunianxiatian/article/details/49401759


下面的代码是responseMsg的一部分:


    public function responseMsg(){       <span style="white-space:pre"></span>//get post data, May be due to the different environments        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; //接收微信发来的XML数据      //extract post dataif(!empty($postStr)){                            //解析post来的XML为一个对象$postObj        $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);                $fromUsername = $postObj->FromUserName; //请求消息的用户        $toUsername = $postObj->ToUserName; //"我"的公众号id        $keyword = trim($postObj->Content); //用户发送的消息内容            $time = time(); //时间戳            $msgtype = 'text'; //消息类型:文本            $textTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[%s]]></MsgType><Content><![CDATA[%s]]></Content></xml>";            if($postObj->MsgType == 'event'){ //如果XML信息里消息类型为event                if($postObj->Event == 'subscribe'){ //如果是订阅事件                    $contentStr = "欢迎订阅misaka去年夏天!\n更多精彩内容:http://blog.csdn.net/misakaqunianxiatian";                    $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgtype, $contentStr);                    echo $resultStr;                    exit();                }            }            $which = mb_substr($keyword, 0, 2, 'UTF-8');//获取要返回什么样的信息            if($which== "翻译"){ //如果要进行翻译                //调用有道翻译API进行翻译            }elseif($which == "天气"){                $wea = $which;                $city = str_replace($wea, "", $keyword);                $ch = curl_init();                $url = 'http://apis.baidu.com/apistore/weatherservice/cityname?cityname=' . $city;                $header = array('apikey: '); //此处的apikey使用自己申请的apikey,填在冒号之后                // 添加apikey到header                curl_setopt($ch, CURLOPT_HTTPHEADER  , $header);                curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);                // 执行HTTP请求                curl_setopt($ch , CURLOPT_URL , $url);                $res = curl_exec($ch);                $res = json_decode($res, true);                $contentStr = "";                foreach($res as $k=>$v){                    if($k == "retData"){                        $contentStr = "城市:" . $v['city'] . "\n";                        $contentStr .= "日期:" . $v['date'] . "\n";                        $contentStr .= "天气:" . $v['weather'] ."\n";                        $contentStr .= "平均气温:" . $v['temp'] . "℃\n";                        $contentStr .= "最低气温:" . $v['l_tmp'] ."℃\n";                        $contentStr .= "最高气温:" . $v['h_tmp'] . "℃\n";                        $contentStr .= "风力:" . $v['WS'] . "\n";                        $contentStr .= "风向:" . $v['WD'] . "\n";                        $contentStr .= "日出时间:" . $v['sunrise'] . "\n";                        $contentStr .= "日落时间:" . $v['sunset'] . "\n";                        $contentStr .= "经度:" . $v['longitude'] . "\n";                        $contentStr .= "纬度:" . $v['latitude'];                    }                }                $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgtype, $contentStr);                echo $resultStr;                exit();            }else{                $contentStr = "输入翻译XXX可以进行翻译(=・ω・=)\n\n输入天气XX可以查询城市天气";                $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgtype, $contentStr);                echo $resultStr;                exit();            }


完成之后(别忘了填写apikey),你的订阅号里,输入天气上海,那么应该能查到上海当天的天气了。

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