<?php
/*
 http://fanyi.youdao.com/openapi.do?keyfrom=weifan&key=791593512&type=data&doctype=<doctype>&version=1.1&q=要翻译的文本 
    方倍工作室 http://www.cnblogs.com/txw1958/
    CopyRight 2013 www.doucube.com  All Rights Reserved
*/
traceHttp();
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
if (isset($_GET['echostr'])) { 
     
    $wechatObj->valid();
}else{ 
     
    $wechatObj->responseMsg();
}
class wechatCallbackapiTest
{ 
     
    public function valid()
    { 
     
        $echoStr = $_GET["echostr"];
        if($this->checkSignature()){ 
     
            echo $echoStr;
            exit;
        }
    }
    private function checkSignature()
    { 
     
        $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 ){ 
     
            return true;
        }else{ 
     
            return false;
        }
    }
    public function responseMsg()
    { 
     
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
        //simplexml_load_string() 函数把 XML 字符串载入对象中。
        if (!empty($postStr)){ 
     
            $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
            $fromUsername = $postObj->FromUserName;
            $toUsername = $postObj->ToUserName;
            $keyword = trim($postObj->Content);
            $time = time();
            $textTpl = "<xml>
                        <ToUserName><![CDATA[%s]]></ToUserName>
                        <FromUserName><![CDATA[%s]]></FromUserName>
                        <CreateTime>%s</CreateTime>
                        <MsgType><![CDATA[%s]]></MsgType>
                        <Content><![CDATA[%s]]></Content>
                        <FuncFlag>0</FuncFlag>
                        </xml>";
                        //sprintf() 函数把格式化的字符串写入一个变量中
                        //strstr() 函数搜索一个字符串在另一个字符串中的第一次出现
            if(!empty($keyword))
            { 
     
                $url="http://api.k780.com:88/?app=weather.future&appkey=14323&sign=0111aa8a973785f0f0926aff75f5af52&format=json&weaid=".$keyword."";
                $str = file_get_contents($url);
                $data = json_decode($str);
                $weather = "";
                $weather .="城市：".$data->result[0]->citynm."   星期：".$data->result[0]->week."   温度：".$data->result[0]->temperature."  天气：".$data->result[0]->weather."  日期：".$data->result[0]->days."";
                $msgType = "text";
                $contentStr = $weather;
                $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
                echo $resultStr;
            }
        
    }else{ 
     
           $msgType = "text";
            $contentStr = $keyword."zzzz";
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            echo $resultStr;
            exit;
    }
}
}
function traceHttp()
{ 
     
    //“REMOTE_ADDR”:正在浏览当前页面用户的 IP 地址。 
    logger("\n\nREMOTE_ADDR:".$_SERVER["REMOTE_ADDR"].(strstr($_SERVER["REMOTE_ADDR"],'101.226')? " FROM WeiXin": "Unknown IP"));
    logger("QUERY_STRING:".$_SERVER["QUERY_STRING"]);
}
function logger($log_content)
{ 
     
    if(isset($_SERVER['HTTP_APPNAME'])){   //SAE
        sae_set_display_errors(false);   //
        sae_debug($log_content);   //sae_debug是保存到日志里面, 不会保存到storage里面.
        sae_set_display_errors(true);
    }else{ //LOCAL
        $max_size = 500000;
        $log_filename = "weixinlog.xml";
        if(file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)){unlink($log_filename);}
        file_put_contents($log_filename, date('Y-m-d H:i:s').$log_content."\r\n", FILE_APPEND);
    }
}
?>