PHP利用天候API获取天气信息

function Ajax(recvType) {  var aj = new Object();  aj.recvType = recvType ? recvType.toUpperCase() : 'HTML'//HTML XML  aj.targetUrl = '';  aj.sendString = '';  aj.resultHandle = null;  aj.createXMLHttpRequest = function() {    var request = false;    //window对象中有XMLHttpRequest存在就是非IE，包括（IE7，IE8）    if (window.XMLHttpRequest) {      request = new XMLHttpRequest();      if (request.overrideMimeType) {        request.overrideMimeType("text/xml");      }      //window对象中有ActiveXObject属性存在就是IE    } else if (window.ActiveXObject) {      var versions = ['Microsoft.XMLHTTP', 'MSXML.XMLHTTP', 'Msxml2.XMLHTTP.7.0', 'Msxml2.XMLHTTP.6.0', 'Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP'];      for (var i = 0; i ?网页部分代码：<div class="iteye-blog-content-contain" style="font-size: 14px;">
<pre name="code" class="html">      <meta http-equiv="content-type" content="text/html; charset=utf-8">    <script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>    <script src="http://libs.baidu.com/bootstrap/2.0.4/js/bootstrap.min.js"></script>    <link href="http://libs.baidu.com/bootstrap/2.0.4/css/bootstrap.min.css" rel="stylesheet">    <title>实时气温信息</title>    <script type="text/javascript" src="./ajax.js"></script>    <script type="text/javascript">      function str2Array(data) {        data = data.replace(/\|/g, "\":\"");        data = data.replace(/,/g, "\",\"");        data = '({\"' + data + '\"})';        return eval(data);      }      function getProvince() {        var ajax = Ajax();        ajax.get("getstr.php?url=http://m.weather.com.cn/data5/city.xml", function(data) {          var arr = str2Array(data);          var prov = document.getElementById("province");          for (var p in arr) {            prov.options.add(new Option(arr[p], p));          }          prov.options.selectedIndex = 0;          getCity(prov.value);        });      }      function getCity(provId) {        var ajax = Ajax();        ajax.get("getstr.php?url=http://m.weather.com.cn/data5/city" + provId + ".xml", function(data) {          var arr = str2Array(data);          var city = document.getElementById("city");          for (var i = city.options.length; i >= 0; i--) {            city.remove(i);          }          for (var p in arr) {            city.options.add(new Option(arr[p], p));          }          getTown(city.value);        });      }      function getTown(provId) {        var ajax = Ajax();        ajax.get("getstr.php?url=http://m.weather.com.cn/data5/city" + provId + ".xml", function(data) {          var arr = str2Array(data);          var town = document.getElementById("town");          for (var i = town.options.length; i >= 0; i--) {            town.remove(i);          }          for (var p in arr) {            town.options.add(new Option(arr[p], p));          }          getCityId();        });      }      function getCityId() {        var ajax = Ajax();        var index = document.getElementById("town").value;        ajax.get("getstr.php?url=http://m.weather.com.cn/data5/city" + index + ".xml", function(data) {          var arr = str2Array(data);          cityId = arr[index];          showWeather(cityId);        });      }      function insertTab(tab, cel1, cel2) {        var newRow = tab.insertRow(tab.rows.length);        var cell = newRow.insertCell(0);        cell.innerHTML = cel1;        var cell = newRow.insertCell(1);        cell.innerHTML = cel2;      }      function showWeather(cityId) {        if (cityId == null) {          return;        }        var ajax = Ajax();        ajax.get("getstr.php?url=http://www.weather.com.cn/data/sk/" + cityId + ".html", function(data) {          data = '(' + data + ')';          var info = eval(data)["weatherinfo"];          var tab = document.getElementById("weather");          var len = tab.rows.length;          while(len-- > 0){            tab.deleteRow(len);          }          insertTab(tab, "城市：", info["city"]);          insertTab(tab, "城市ID：", info["cityid"]);          insertTab(tab, "气温：", info["temp"] + "℃");          insertTab(tab, "风向：", info["WD"]);          insertTab(tab, "风力：", info["WS"]);          insertTab(tab, "湿度：", info["SD"]);          insertTab(tab, "更新时间：", info["time"]);        });      }      getProvince();    </script>    <style type="text/css">        select {            width: 100px;        }    </style>        <div style="margin: 20px">      <legend>        Weather      </legend>      <br>      <select id="province" onchange="getCity(this.value)"></select>      <select id="city" onchange="getTown(this.value)"></select>      <select id="town" onchange="getCityId()"></select>      <br>      <table id="weather" class="table table-striped table-bordered" style="width: 310px"></table>    </div>