<?php 
class Wechat { private $data = array(); public function __construct($token){ $this->auth($token) || exit; if(IS_GET){ echo($_GET['echostr']);exit; } else { $xml = file_get_contents("php://input"); $xml = new SimpleXMLElement($xml); $xml || exit; foreach ($xml as $key => $value) { $this->data[$key] = strval($value); } } } public function request(){ return $this->data; } public function response($content, $type = 'text', $flag = 0){ $this->data = array( 'ToUserName' => $this->data['FromUserName'], 'FromUserName' => $this->data['ToUserName'], 'CreateTime' => NOW_TIME, 'MsgType' => $type, ); $this->$type($content); $this->data['FuncFlag'] = $flag; $xml = new SimpleXMLElement('<xml></xml>'); $this->data2xml($xml, $this->data); exit($xml->asXML()); } private function text($content){ $this->data['Content'] = $content; } private function music($music){ list( $music['Title'], $music['Description'], $music['MusicUrl'], $music['HQMusicUrl'] ) = $music; $this->data['Music'] = $music; } private function news($news){ $articles = array(); foreach ($news as $key => $value) { list( $articles[$key]['Title'], $articles[$key]['Description'], $articles[$key]['PicUrl'], $articles[$key]['Url'] ) = $value; if($key >= 9) { break; } } $this->data['ArticleCount'] = count($articles); $this->data['Articles'] = $articles; } private function data2xml($xml, $data, $item = 'item') { foreach ($data as $key => $value) { is_numeric($key) && $key = $item; if(is_array($value) || is_object($value)){ $child = $xml->addChild($key); $this->data2xml($child, $value, $item); } else { if(is_numeric($value)){ $child = $xml->addChild($key, $value); } else { $child = $xml->addChild($key); $node = dom_import_simplexml($child); $node->appendChild($node->ownerDocument->createCDATASection($value)); } } } } private function auth($token){ $data = array($_GET['timestamp'], $_GET['nonce'], $token); $sign = $_GET['signature']; sort($data); $signature = sha1(implode($data)); return $signature === $sign; } }
?>