通过气象局开放API查询指定城市（区县）天气代码,PHP代码库,德仔网

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【PHP】通过气象局开放API查询指定城市（区县）天气

作者:Hardy / 发布于2015/10/13/ 614

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


	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!';
	}
	?>

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