具体应用说不上,写这个功能纯粹为了好玩,可能在网站的小挂件里没准能用上这样的功能,或者一些生活类网站比较适用,在正式进入本话题之前,必须要通过PHP将JSON格式省市(区)二级数据插入数据库,才能进行接下来的天气查询操作,所谓巧妇难为无米之炊,斯理也。在完成省市信息入库之后,理一下实现思路:前台通过搜索框执行ajax请求,后台根据城市名称查询城市编码,然后通过城市编码组装成API接口获取该城市天气信息,返回到前台,其实还是很简单的,代码如下:
1.前台代码 weather.php:
<?php /* * author:phpxs.com * website: * url:http://www.phpxs.com/post/2945 */ ?> <script type="text/javascript" src="/uploads/201502/02/14228784541.js"> </script> <input type="text" id="city_name" name="city"/> <button id="query" onclick="queryWeather();">查询</button> <div id="show"> </div> <script type="text/javascript"> function queryWeather(){ $.post('getweather.php', {city: $("#city_name").val()}, function(data) { //optional stuff to do after success var weather = data.weatherinfo.weather1; var temp = data.weatherinfo.temp1; $("#show").html(weather+","+temp); },'json'); } </script>
2.后台代码 getweather.php:
<?php /* * author:phpxs.com * website: * url:http://www.phpxs.com/post/2945 */ if (isset($_POST['city'])) { $city = $_POST['city']; //通过城市名称获取城市ID $pdo = new PDO('mysql:host=localhost;dbname=test;charset=utf8','root','root'); $stmt = $pdo->prepare('SELECT id FROM city WHERE name=:name'); $stmt->bindParam(':name',$city); $stmt->execute(); $cid = $stmt->fetchColumn(); //通过城市ID获取城市天气详情 $api = "http://m.weather.com.cn/data/".$cid.".html"; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $api); curl_setopt($ch, CURLOPT_HEADER, false); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.1 Safari/537.11'); $ret = curl_exec($ch); curl_close($ch); //返回获取json格式结果 echo $ret; }else{ echo '请输入要查询的城市名!'; } ?>
3.效果演示:
- 本文固定链接: https://zxbcw.cn/post/2945/
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