微信公众号平台天气预报开发

<?php
    function httpRequest($url)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $output = curl_exec($ch);
        curl_close($ch);
        if ($output === FALSE){
            return "cURL Error: ". curl_error($ch);
        }
        return $output;
    }

    function getcity($add){
        include conn.inc.php;   //调用连接数据库的php文件
        mysql_set_charset("utf8");
        mysql_select_db($dbname);
        mysql_query("set names utf8");

        $sql = "select cityCode from weather where cityName = $add";
        $result = mysql_query($sql);
        $row = mysql_fetch_assoc($result);
        return $row[cityCode];
    }
    
    //根据citycode获取天气接口的数据
    function getWeatherInfo($cityCode){    
        //获取实时天气
        $url = "http://www.weather.com.cn/data/sk/".$cityCode.".html";
        $output = httpRequest($url);
        $weather = json_decode($output, true);
        $info = $weather[weatherinfo];

        $weatherArray = array();
        $weatherArray[] = array("Title"=>$info[city]."现在的天气预报", "Description"=>"", "PicUrl"=>"", "Url" =>"");
        if ((int)$cityCode < 101340000){
            $result = "实况 温度：".$info[temp]."℃ 湿度：".$info[SD]." 风速：".$info[WD].$info[WSE]."级";
            $weatherArray[] = array("Title"=>str_replace("%", "﹪", $result), "Description"=>"", "PicUrl"=>"", "Url" =>"");
        }

        //获取六日天气
        $url = "http://m.weather.com.cn/data/".$cityCode.".html";
        $output = httpRequest($url);
        $weather = json_decode($output, true);
        $info = $weather[weatherinfo];

        if (!empty($info[index_d])){
            $weatherArray[] = array("Title" =>$info[index_d], "Description" =>"", "PicUrl" =>"", "Url" =>"");
        }

        $weekArray = array("日","一","二","三","四","五","六");
        $maxlength = 3;
        for ($i = 1; $i <= $maxlength; $i++) {
            $offset = strtotime("+".($i-1)." day");
            $subTitle = date("m月d日",$offset)." 周".$weekArray[date(w,$offset)]." ".$info[temp.$i]." ".$info[weather.$i]." ".$info[wind.$i];
            $weatherArray[] = array("Title" =>$subTitle, "Description" =>"", "PicUrl" =>"http://discuz.comli.com/weixin/weather/"."d".sprintf("%02u",$info[img.(($i *2)-1)]).".jpg", "Url" =>"");
        }

        return $weatherArray;
    }




?>