使用PHP实现微信订阅号天气预报及论坛地址功能开发
index.php代码

<?php
/*
轩宇工作室
CopyRight 2014 All Rights Reserved
*/
//定义TOKEN
define("TOKEN", "weixin");

$wechatObj = new wechatCallbackapiTest();
if (!isset($_GET['echostr'])) {
$wechatObj->responseMsg();
}else{
$wechatObj->valid();
}

class wechatCallbackapiTest
{
//验证签名
public function valid()
{
$echoStr = $_GET["echostr"];
$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
$token = TOKEN;
$tmpArr = array($token, $timestamp, $nonce);
sort($tmpArr);
$tmpStr = implode($tmpArr);
$tmpStr = sha1($tmpStr);
if($tmpStr == $signature){
echo $echoStr;
exit;
}
}

public function responseMsg()
{
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
if (!empty($postStr)){
$this->logger("R ".$postStr);
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
$RX_TYPE = trim($postObj->MsgType);

$result = "";
switch ($RX_TYPE)
{
case "event":
$result = $this->receiveEvent($postObj);
break;
case "text":
$result = $this->receiveText($postObj);
break;
}
$this->logger("T ".$result);
echo $result;
}else {
echo "";
exit;
}
}

private function receiveEvent($object)
{
switch ($object->Event)
{
case "subscribe":
$content = "欢迎关注鸟击知识平台 ";
break;
}
$result = $this->transmitText($object, $content);
return $result;
}

private function receiveText($object)
{
$keyword = trim($object->Content);
//判断天气
if (strstr($keyword, "天气")){
$city = str_replace('天气', '', $keyword);
include("weather.php");
$content = getWeatherInfo($city);
//判断论坛，输入论坛直接发送图文消息并跳转到相应的链接地址
}else if (strstr($keyword, "论坛")){
$content[] = array("Title" =>"我们的论坛","Description" =>"", "PicUrl" =>"http://www.henkuai.com/template/mobanbus_qyv1/mobanbus_st/img//logo.png", "Url" =>"http://www.henkuai.com/");
}else{
$content = "功能未开发，请关注我们的最新消息。"."\n技术支持 轩宇工作室"."\n".date("Y-m-d H:i:s",time());
}

if(is_array($content)){
if (isset($content[0]['PicUrl'])){
$result = $this->transmitNews($object, $content);
}else if (isset($content['MusicUrl'])){
$result = $this->transmitMusic($object, $content);
}
}else{
$result = $this->transmitText($object, $content);
}

return $result;
}

private function transmitText($object, $content)
{
if (!isset($content) || empty($content)){
return "";
}
$textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[%s]]></Content>
</xml>";
$result = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content);
return $result;
}

private function transmitNews($object, $newsArray)
{
if(!is_array($newsArray)){
return "";
}
$itemTpl = " <item>
<Title><![CDATA[%s]]></Title>
<Description><![CDATA[%s]]></Description>
<PicUrl><![CDATA[%s]]></PicUrl>
<Url><![CDATA[%s]]></Url>
</item>
";
$item_str = "";
foreach ($newsArray as $item){
$item_str .= sprintf($itemTpl, $item['Title'], $item['Description'], $item['PicUrl'], $item['Url']);
}
$newsTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[news]]></MsgType>
<Content><![CDATA[]]></Content>
<ArticleCount>%s</ArticleCount>
<Articles>
$item_str</Articles>
</xml>";

$result = sprintf($newsTpl, $object->FromUserName, $object->ToUserName, time(), count($newsArray));
return $result;
}

private function logger($log_content)
{

}
}
?>

weather.php代码

<?php

// var_dump(getWeatherInfo("深圳"));

function getWeatherInfo($cityName)
{
if ($cityName == "" || (strstr($cityName, "+"))){
return "发送天气+城市，例如'天气深圳'";
}
$url = "http://api.map.baidu.com/telematics/v3/weather?location=".urlencode($cityName)."&output=json&ak=ECe3698802b9bf4457f0e01b544eb6aa";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);
$result = json_decode($output, true);
if ($result["error"] != 0){
return $result["status"];
}
$curHour = (int)date('H',time());
$weather = $result["results"][0];
$weatherArray[] = array("Title" =>$weather['currentCity']."天气预报", "Description" =>"", "PicUrl" =>"", "Url" =>"");
for ($i = 0; $i < count($weather["weather_data"]); $i++) {
$weatherArray[] = array("Title"=>
$weather["weather_data"][$i]["date"]."\n".
$weather["weather_data"][$i]["weather"]." ".
$weather["weather_data"][$i]["wind"]." ".
$weather["weather_data"][$i]["temperature"],
"Description"=>"", 
"PicUrl"=>(($curHour >= 6) && ($curHour < 18))?$weather["weather_data"][$i]["dayPictureUrl"]:$weather["weather_data"][$i]["nightPictureUrl"], "Url"=>"");
}
return $weatherArray;
}
?>