PHP微信开发之查询城市天气
author:一佰互联 2019-04-27   click:140

PHP微信查询城市天气,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);
echo "<pre>";
print_r($res);
echo "</pre>";

$contentStr = "";

foreach($res as $k=>$v){
 if($k == "retData"){
 $contentStr = "城市:" . $v["city"] . "
";
 $contentStr .= "日期:" . $v["date"] . "
";
 $contentStr .= "天气:" . $v["weather"] ."
";
 $contentStr .= "平均气温:" . $v["temp"] . "℃
";
 $contentStr .= "最低气温:" . $v["l_tmp"] ."℃
";
 $contentStr .= "最高气温:" . $v["h_tmp"] . "℃
";
 $contentStr .= "风力:" . $v["WS"] . "
";
 $contentStr .= "风向:" . $v["WD"] . "
";
 $contentStr .= "日出时间:" . $v["sunrise"] . "
";
 $contentStr .= "日落时间:" . $v["sunset"] . "
";
 $contentStr .= "经度:" . $v["longitude"] . "
";
 $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,可以参考我之前的文章://www.yinxi.net/article/87252.htm

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 data
 if(!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!
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"] . "
";
   $contentStr .= "日期:" . $v["date"] . "
";
   $contentStr .= "天气:" . $v["weather"] ."
";
   $contentStr .= "平均气温:" . $v["temp"] . "℃
";
   $contentStr .= "最低气温:" . $v["l_tmp"] ."℃
";
   $contentStr .= "最高气温:" . $v["h_tmp"] . "℃
";
   $contentStr .= "风力:" . $v["WS"] . "
";
   $contentStr .= "风向:" . $v["WD"] . "
";
   $contentStr .= "日出时间:" . $v["sunrise"] . "
";
   $contentStr .= "日落时间:" . $v["sunset"] . "
";
   $contentStr .= "经度:" . $v["longitude"] . "
";
   $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・=)

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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