微信公众平台DEMO（PHP）

本人在SAE环境下搭建了CI框架（其实这个小东西用不着用框架的），直接把代码写在了控制器里面
<?php if （ ！ defined（"BASEPATH"）） exit（"No direct script access allowed"）; //define your tokendefine（"TOKEN", "109"）; class Welcome extends CI_Controller { public function index（）{/*$this->load->helper（"url"）;$this->load->view（"welcome_message"）;*/ // use chat response$this->responseMsg（）; } // chat responsepublic function responseMsg（）{//get post data, May be due to the different environments$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];//extract post dataif （！empty（$postStr））{ $postObj = simplexml_load_string（$postStr, "SimpleXMLElement", LIBXML_NOCDATA）;$fromUsername = $postObj->FromUserName;$toUsername = $postObj->ToUserName;$MsgType = $postObj->MsgType;$time = time（）; switch（$MsgType）{case（"text"）:$keyword = trim（$postObj->Content）;$textTpl = "<xml><ToUserName><！[CDATA[%s]]></ToUserName><FromUserName><！[CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><！[CDATA[%s]]></MsgType><Content><！[CDATA[%s]]></Content></xml>";switch（$keyword）{case（1）:// Need to optimize// random read data from jokes$sql = "SELECT * FROM jokes";$query = $this->db->query（$sql）;$res = $query->result_array（）;$num_rows = $query->num_rows（）;$key = rand（0, $num_rows - 1）; // Notice: The value of key is from 0.//$contentStr = $key."#".$res[$key ]["content"]; // debug$contentStr = $res[$key ]["content"]; break;case（2）:$contentStr = "Your fromUsername is: ".$fromUsername; break; case（3）:$newsTpl = "<xml><ToUserName><！[CDATA[%s]]></ToUserName><FromUserName><！[CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><！[CDATA[%s]]></MsgType><ArticleCount>2</ArticleCount> <Articles><item><Title><！[CDATA[%s]]></Title> <Description><！[CDATA[%s]]></Description><PicUrl><！[CDATA[%s]]></PicUrl><Url><！[CDATA[%s]]></Url></item><item><Title><！[CDATA[%s]]></Title><Description><！[CDATA[%s]]></Description><PicUrl><！[CDATA[%s]]></PicUrl><Url><！[CDATA[%s]]></Url></item></Articles> </xml> "; $resultStr = sprintf（$newsTpl, $fromUsername, $toUsername, $time,"news","百度","", "http://www.baidu.com/img/bdlogo.gif", "http://www.baidu.com","Google","", "", "http://www.google.com"）; // Notice: Google"s logo is not suitable.echo $resultStr;exit; // Notice: It"s exit, not break.case（4）:$contentStr = "该功能正在开发中，敬请期待..."; break; /* others */ default:$contentStr = "回复数字 选择服务
";$contentStr .= "1 笑话精选
";$contentStr .= "2 获取您的Username...
";$contentStr .= "3 图文消息示例
"; $contentStr .= "4 开发中...
"; break;}$resultStr = sprintf（$textTpl, $fromUsername, $toUsername, $time, "text", $contentStr）;break; case（"image"）: $media_id = $postObj->MediaId;$imgTpl = "<xml><ToUserName><！[CDATA[%s]]></ToUserName><FromUserName><！[CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><！[CDATA[%s]]></MsgType><Image><MediaId><！[CDATA[%s]]></MediaId></Image></xml>";$resultStr = sprintf（$imgTpl, $fromUsername, $toUsername, $time, "image", $media_id）;break; // try get the id of the receive image and analyse/*$media_id = $postObj->MediaId;$textTpl = "<xml><ToUserName><！[CDATA[%s]]></ToUserName><FromUserName><！[CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><！[CDATA[%s]]></MsgType><Content><！[CDATA[%s]]></Content></xml>";$length = strlen（$media_id）;$contentStr = "I have received the image message you sent, the id of this image is # $media_id #, and the length of media_id is # $length #";$resultStr = sprintf（$textTpl, $fromUsername, $toUsername, $time, "text", $contentStr）;break;*/ case（"voice"）:$textTpl = "<xml><ToUserName><！[CDATA[%s]]></ToUserName><FromUserName><！[CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><！[CDATA[%s]]></MsgType><Content><！[CDATA[%s]]></Content></xml>"; $contentStr = "你说啥?俺听不见...";$resultStr = sprintf（$textTpl, $fromUsername, $toUsername, $time, "text", $contentStr）;break; /* others */ default:$resultStr = "Input something...";break;}echo $resultStr; }else {echo "";exit;}}}