php 实现简单微信文本通讯的微信公众号开发

<?php

class Weixin

{

public $token = &#39;&#39;;//token

public $debug = false;//是否debug的状态标示，方便我们在调试的时候记录一些中间数据

public $setFlag = false;

public $msgtype = &#39;text&#39;; //(&#39;text&#39;,&#39;image&#39;,&#39;location&#39;)

public $msg = array();

public function __construct($token,$debug)

{

$this->token = $token;

$this->debug = $debug;

}

//获得用户发过来的消息（消息内容和消息类型 ）

public function getMsg()

{

$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

if (!empty($postStr)) {

$this->msg = (array)simplexml_load_string($postStr, &#39;SimpleXMLElement&#39;, LIBXML_NOCDATA);

$this->msgtype = strtolower($this->msg[&#39;MsgType&#39;]);

}

}

//回复文本消息

public function makeText($text=&#39;&#39;)

{

$CreateTime = time();

$FuncFlag = $this->setFlag ? 1 : 0;

$textTpl = "<xml>

<ToUserName><![CDATA[{$this->msg[&#39;FromUserName&#39;]}]]></ToUserName>

<FromUserName><![CDATA[{$this->msg[&#39;ToUserName&#39;]}]]></FromUserName>

<CreateTime>{$CreateTime}</CreateTime>

<MsgType><![CDATA[text]]></MsgType>

<Content><![CDATA[%s]]></Content>

<FuncFlag>%s</FuncFlag>

</xml>";

return sprintf($textTpl,$text,$FuncFlag);

}

//根据数组参数回复图文消息

public function makeNews($newsData=array())

{

$CreateTime = time();

$FuncFlag = $this->setFlag ? 1 : 0;

$newTplHeader = "<xml>

<ToUserName><![CDATA[{$this->msg[&#39;FromUserName&#39;]}]]></ToUserName>

<FromUserName><![CDATA[{$this->msg[&#39;ToUserName&#39;]}]]></FromUserName>

<CreateTime>{$CreateTime}</CreateTime>

<MsgType><![CDATA[news]]></MsgType>

<Content><![CDATA[%s]]></Content>

<ArticleCount>%s</ArticleCount><Articles>";

$newTplItem = "<item>

<Title><![CDATA[%s]]></Title>

<Description><![CDATA[%s]]></Description>

<PicUrl><![CDATA[%s]]></PicUrl>

<Url><![CDATA[%s]]></Url>

</item>";

$newTplFoot = "</Articles>

<FuncFlag>%s</FuncFlag>

</xml>";

$Content = &#39;&#39;;

$itemsCount = count($newsData[&#39;items&#39;]);

$itemsCount = $itemsCount < 10 ? $itemsCount : 10;//微信公众平台图文回复的消息一次最多10条

if ($itemsCount) {

foreach ($newsData[&#39;items&#39;] as $key => $item) {

if ($key<=9) {

$Content .= sprintf($newTplItem,$item[&#39;title&#39;],$item[&#39;description&#39;],$item[&#39;picurl&#39;],$item[&#39;url&#39;]);

}

}

}

$header = sprintf($newTplHeader,$newsData[&#39;content&#39;],$itemsCount);

$footer = sprintf($newTplFoot,$FuncFlag);

return $header . $Content . $footer;

}

public function reply($data)

{

echo $data;

}

public function valid()

{

if ($this->checkSignature()) {

if( $_SERVER[&#39;REQUEST_METHOD&#39;]==&#39;GET&#39; )

{

echo $_GET[&#39;echostr&#39;];

exit;

}

}else{

exit;

}

}

private function checkSignature()

{

$signature = $_GET["signature"];

$timestamp = $_GET["timestamp"];

$nonce = $_GET["nonce"];

$tmpArr = array($this->token, $timestamp, $nonce);

sort($tmpArr);

$tmpStr = implode( $tmpArr );

$tmpStr = sha1( $tmpStr );

if( $tmpStr == $signature ){

return true;

}else{

return false;

}

}

}

?>

define("TOKEN", "");

define(&#39;DEBUG&#39;, false);

include_once(&#39;weixin.class.php&#39;);

require_once("db.php");

$weixin = new Weixin(TOKEN,DEBUG);//实例化

$weixin->getMsg();

$type = $weixin->msgtype;//消息类型

$keyword = $weixin->msg[&#39;Content&#39;];//获取的文本

if ($type===&#39;text&#39;) {

$reply = $weixin->makeText($key);

}elseif($type===&#39;event&#39;){//第一次关注推送事件

$reply = $weixin->makeText("欢迎关注");

}else{//其他类型

$reply = $weixin->makeText("暂时没有图片,声音,地理位置等功能,后续开发会增加,感谢你关注");

}

$weixin->reply($reply);