PHP微信开发之查询城市天气

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'] . "n";
 $contentstr .= "日期：" . $v['date'] . "n";
 $contentstr .= "天气：" . $v['weather'] ."n";
 $contentstr .= "平均气温：" . $v['temp'] . "℃n";
 $contentstr .= "最低气温：" . $v['l_tmp'] ."℃n";
 $contentstr .= "最高气温：" . $v['h_tmp'] . "℃n";
 $contentstr .= "风力：" . $v['ws'] . "n";
 $contentstr .= "风向：" . $v['wd'] . "n";
 $contentstr .= "日出时间：" . $v['sunrise'] . "n";
 $contentstr .= "日落时间：" . $v['sunset'] . "n";
 $contentstr .= "经度：" . $v['longitude'] . "n";
 $contentstr .= "纬度：" . $v['latitude'];
 }
}

echo $contentstr;

 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！n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'] . "n";
   $contentstr .= "日期：" . $v['date'] . "n";
   $contentstr .= "天气：" . $v['weather'] ."n";
   $contentstr .= "平均气温：" . $v['temp'] . "℃n";
   $contentstr .= "最低气温：" . $v['l_tmp'] ."℃n";
   $contentstr .= "最高气温：" . $v['h_tmp'] . "℃n";
   $contentstr .= "风力：" . $v['ws'] . "n";
   $contentstr .= "风向：" . $v['wd'] . "n";
   $contentstr .= "日出时间：" . $v['sunrise'] . "n";
   $contentstr .= "日落时间：" . $v['sunset'] . "n";
   $contentstr .= "经度：" . $v['longitude'] . "n";
   $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・=)nn输入天气xx可以查询城市天气";
  $resultstr = sprintf($texttpl, $fromusername, $tousername, $time, $msgtype, $contentstr);
  echo $resultstr;
  exit();
  }