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WeChatServer.php
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<?PHP
/**
* @author zemzheng@gmail.com
* @description
* @see https://github.com/zemzheng/WeChatPHP-SDK
* @see http://admin.wechat.com/wiki
* @see http://mp.weixin.qq.com/wiki
*/
class WeChatServer{
private $_token;
/**
* ****** hooks list ******
* receiveAllStart
* receiveMsg::text
* receiveMsg::location
* receiveMsg::image
* receiveMsg::video
* receiveMsg::link
* receiveMsg::voice
* receiveEvent::subscribe
* receiveEvent::unsubscribe
* receiveEvent::scan
* receiveEvent::location
* receiveEvent::click
* receiveAllEnd
* accessCheckSuccess
* 404
*/
private $_hooks;
public function __construct( $token, $hooks = array() ){
$this->_token = $token;
$this->_hooks = $hooks;
$this->accessDataPush();
}
private function _activeHook( $type ){
if(
!isset( $this->_hooks[$type] )
|| !is_callable( $this->_hooks[$type] )
) return null;
$argvs = func_get_args();
array_shift( $argvs );
return call_user_func_array(
$this->_hooks[ $type ], $argvs
);
}
private function _checkSignature(){
return true;
$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
$token = $this->_token;
$tmpArr = array($token, $timestamp, $nonce);
sort($tmpArr);
$tmpStr = implode( $tmpArr );
$tmpStr = sha1( $tmpStr );
return $tmpStr == $signature;
}
private function _handlePostObj( $postObj ){
$MsgType = strtolower( (string)$postObj->MsgType );
$result = array(
'from' => self::$_from_id = (string) htmlspecialchars( $postObj->FromUserName ),
'to' => self::$_my_id = (string) htmlspecialchars( $postObj->ToUserName ),
'time' => (int) $postObj->CreateTime,
'type' => (string) $MsgType
);
if( property_exists($postObj, 'MsgId') ){
$result['id'] = $postObj->MsgId;
}
switch( $result['type'] ){
case 'text':
$result['content'] = (string) $postObj->Content; // Content 消息内容
break;
case 'location':
$result['X'] = (float) $postObj->Location_X; // Location_X 地理位置纬度
$result['Y'] = (float) $postObj->Location_Y; // Location_Y 地理位置经度
$result['S'] = (float) $postObj->Scale; // Scale 地图缩放大小
$result['I'] = (string) $postObj->Label; // Label 地理位置信息
break;
case 'image':
$result['url'] = (string) $postObj->PicUrl; // PicUrl 图片链接，开发者可以用HTTP GET获取
$result['mid'] = (string) $postObj->MediaId; // MediaId 图片消息媒体id，可以调用多媒体文件下载接口拉取数据。
break;
case 'video':
$result['mid'] = (string) $postObj->MediaId; // MediaId 图片消息媒体id，可以调用多媒体文件下载接口拉取数据。
$result['thumbmid'] = (string) $postObj->ThumbMediaId; // ThumbMediaId 视频消息缩略图的媒体id，可以调用多媒体文件下载接口拉取数据。
break;
case 'link':
$result['title'] = (string) $postObj->Title; // 消息标题
$result['desc'] = (string) $postObj->Description; // 消息描述
$result['url'] = (string) $postObj->Url; // 消息链接
break;
case 'voice':
$result['mid'] = (string) $postObj->MediaID; // 语音消息媒体id，可以调用多媒体文件下载接口拉取该媒体
$result['format'] = (string) $postObj->Format; // 语音格式：amr
if( property_exists( $postObj, Recognition ) ){
$result['txt'] = (string) $postObj->Recognition; // 语音识别结果，UTF8编码
}
break;
case 'event':
$result['event'] = strtolower((string) $postObj->Event); // 事件类型，subscribe(订阅)、unsubscribe(取消订阅)、CLICK(自定义菜单点击事???
switch( $result['event'] ){
// case 'unsubscribe': // 取消订阅
case 'subscribe': // 订阅
case 'scan': // 扫描二维码
if( property_exists( $postObj, EventKey ) ){
// 扫描带参数二维码事件
$result['key'] = str_replace(
'qrscene_', '', (string) $postObj->EventKey
); // 事件KEY值，qrscene_为前缀，后面为二维码的参数值
$result['ticket'] = (string) $postObj->Ticket;
}
break;
case 'location': // 上报地理位置事件
$result['la'] = (string) $postObj->Latitude; // 地理位置纬度
$result['lo'] = (string) $postObj->Longitude; // 地理位置经度
$result['p'] = (string) $postObj->Precision; // 地理位置精度
break;
case 'click': // 自定义菜单事件
$result['key'] = (string) $postObj->EventKey; // 事件KEY值，与自定义菜单接口中KEY值对???
break;
}
}
return $result;
}
private function accessDataPush(){
if( !$this->_checkSignature() ){
if( !headers_sent() ){
header('HTTP/1.1 404 Not Found');
header('Status: 404 Not Found');
}
$this->_activeHook('404');
return;
}
if(isset($GLOBALS["HTTP_RAW_POST_DATA"])){
if( !$this->_checkSignature() ) return;
$postObj = simplexml_load_string(
$GLOBALS["HTTP_RAW_POST_DATA"],
'SimpleXMLElement',
LIBXML_NOCDATA
);
$postObj = $this->_handlePostObj($postObj);
$this->_activeHook('receiveAllStart', $postObj);
// Call Special Request Handle Function
if( isset( $postObj['event'] ) ){
$hookName = 'receiveEvent::' . $postObj['event'];
} else {
$hookName = 'receiveMsg::' . $postObj['type'];
}
$this->_activeHook( $hookName, $postObj );
$this->_activeHook('receiveAllEnd', $postObj);
} else if( isset($_GET['echostr']) ){
$this->_activeHook('accessCheckSuccess');
// avoid of xss
if( !headers_sent() ) header('Content-Type: text/plain');
echo preg_replace('/[^a-z0-9]/i', '', $_GET['echostr']);
}
}
private static $_from_id;
private static $_my_id;
private static function _format2xml( $nodes ){
$xml = '<xml>'
. '<ToUserName><![CDATA[%s]]></ToUserName>'
. '<FromUserName><![CDATA[%s]]></FromUserName>'
. '<CreateTime>%s</CreateTime>'
. '%s'
. '</xml>';
return sprintf(
$xml,
self::$_from_id,
self::$_my_id,
time(),
$nodes
);
}
public static function getXml4Txt( $txt ){
$xml = '<MsgType><![CDATA[text]]></MsgType>'
. '<Content><![CDATA[%s]]></Content>';
return self::_format2xml(
sprintf(
$xml,
$txt
)
);
}
public static function getXml4ImgByMid( $mid ){
$xml = '<MsgType><![CDATA[image]]></MsgType>'
. '<Image>'
. '<MediaId><![CDATA[%s]]></MediaId>'
. '</Image>';
return self::_format2xml(
$xml,
$mid
);
}
public static function getXml4VoiceByMid( $mid ){
$xml = '<MsgType><![CDATA[voice]]></MsgType>'
. '<Voice>'
. '<MediaId><![CDATA[%s]]></MediaId>'
. '</Voice>';
return self::_format2xml(
$xml,
$mid
);
}
public static function getXml4VideoByMid( $mid, $title, $desc = '' ){
$desc = '' !== $desc ? $desc : $title;
$xml = '<MsgType><![CDATA[video]]></MsgType>'
. '<Video>'
. '<MediaId><![CDATA[%s]]></MediaId>'
. '<Title><![CDATA[%s]]></Title>'
. '<Description><![CDATA[%s]]></Description>'
. '</Video>';
return self::_format2xml(
$xml,
$mid,
$title,
$desc
);
}
public static function getXml4MusicByUrl( $url, $thumbmid, $title, $desc = '', $hqurl = '' ){
$xml = '<MsgType><![CDATA[music]]></MsgType>'
. '<Music>'
. '<Title><![CDATA[%s]]></Title>'
. '<Description><![CDATA[%s]]></Description>'
. '<MusicUrl><![CDATA[%s]]></MusicUrl>'
. '<HQMusicUrl><![CDATA[%s]]></HQMusicUrl>'
. '<ThumbMediaId><![CDATA[%s]]></ThumbMediaId>'
. '</Music>';
return self::_format2xml(
$xml,
$title,
'' === $desc ? $title : $desc,
$url,
$hqurl ? $hqurl : $url,
$thumbmid
);
}
public static function getXml4RichMsgByArray( $list ){
$max = 10;
$i = 0;
$ii = count( $list );
$list_xml = '';
while( $i < $ii && $i < $max ){
$item = $list[ $i++ ];
$list_xml .=
sprintf(
'<item>'
. '<Title><![CDATA[%s]]></Title> '
. '<Description><![CDATA[%s]]></Description>'
. '<PicUrl><![CDATA[%s]]></PicUrl>'
. '<Url><![CDATA[%s]]></Url>'
. '</item>',
$item['title'],
$item['desc'],
$item['pic'],
$item['url']
);
}
$xml = '<MsgType><![CDATA[news]]></MsgType>'
. '<ArticleCount>%s</ArticleCount>'
. '<Articles>%s</Articles>';
return self::_format2xml( $xml, $i, $list_xml );
}
}