weixin

<?php
class Weixin {

	public function __construct($postStr) {
		if( !empty($_GET['echostr']) && $this->check_signature() ) {
			echo $_GET['echostr'];
			return;
		}

		if( empty($postStr) ) {
			exit('no data received');
		}

		$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
		$this->ToUserName 	= $postObj->ToUserName;
		$this->FromUserName 	= $postObj->FromUserName;
		$this->CreateTime 	= $postObj->CreateTime;
		$this->MsgType 		= $postObj->MsgType;
		$this->Content 		= $postObj->Content;
		$this->textTemplate 	= "
			<xml>
				<ToUserName><![CDATA[%s]]></ToUserName>
				<FromUserName><![CDATA[%s]]></FromUserName>
				<CreateTime>%s</CreateTime>
				<MsgType><![CDATA[%s]]></MsgType>
				<Content><![CDATA[%s]]></Content>
				<FuncFlag>0</FuncFlag>
			</xml>
		";

		switch ($this->MsgType) {
			default:
				$this->process_text( $this->Content );
				break;
		}
	}


	protected function check_signature() {
    		$signature = $_GET["signature"];
   		$timestamp = $_GET["timestamp"];
    		$nonce 	= $_GET["nonce"];
		$token 	= "****";
		$tmpArr = array( $token, $timestamp, $nonce );
		$tmpStr = sha1( implode( sort( $tmpArr ) ) );
		 
		return ($tmpStr == $signature);
	}

	protected function process_text( $keyword ) {
		$time 		= time();
		$msgType 	= "text";
		$content 	= "blahblah";

		$output = sprintf($this->textTemplate, $this->ToUserName, $this->FromUserName, $time, $msgType, $content);
		echo $output;

		return;
	}
}
$weixin = new Weixin( $GLOBALS["HTTP_RAW_POST_DATA"] );
?>