微信公众平台开发接口之百度翻译

<?php

//define your token
define("TOKEN", "lizi");
$wechatObj = new wechatCallbackapiTest();
//$wechatObj->valid();
$wechatObj->responseMsg();
class wechatCallbackapiTest
{
public function valid()
{
$echoStr = $_GET["echostr"];

//valid signature , option
if($this->checkSignature()){
echo $echoStr;
exit;
}
}

public function responseMsg()
{
//get post data, May be due to the different environments
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

//extract post data
if (!empty($postStr)){

$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
$fromUsername = $postObj->FromUserName;
$toUsername = $postObj->ToUserName;
$type = $postObj->MsgType;
$customrevent = $postObj->Event;
$latitude = $postObj->Location_X;
$longitude = $postObj->Location_Y;
$keyword = trim($postObj->Content);
$time = time();
$textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[%s]]></MsgType>
<Content>%s</Content>
<FuncFlag>0</FuncFlag>
</xml>";
switch ($type)
{
case "text";
$tranurl="http://openapi.baidu.com/public/2.0/bmt/translate?client_id=9peNkh97N6B9GGj9zBke9tGQ&q={$keyword}&from=auto&to=auto";//百度翻译地址
$transtr=file_get_contents($tranurl);//读入文件
$transon=json_decode($transtr);//json解析
//print_r($transon);
$contentStr = $transon->trans_result[0]->dst;//读取翻译内容

break;
default;
$contentStr ="此项功能尚未开发";
}
$msgType="text";
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
echo $resultStr;

}else {
echo "";
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;
}
}
}

?>