<?php
header('content-type:text/html; charset=utf8');
define('TOKEN', 'weixin'); // TOKEN
define('APP_ID', '开发者AppID'); // 开发者AppID，服务号可获取
define('APP_SECRET', '你的AppSecret'); // 开发者AppSecret，服务号可获取
set_time_limit(30); //为防止access_token获取失败导致死循环
$wechatObj = new WechatClass();

$xuejing="?ddsfasdfasd&&accddd";

//echo '二维码地址：'. $wechatObj->QrcodeCreate($xuejing);














class WechatClass{
    private $token;
    private $appID;
    private $appSecret;
    private $accessToken;
    public function __CONSTRUCT(){
        $this->token     = TOKEN;
        $this->appID     = APP_ID;
        $this->appSecret = APP_SECRET;
        $this->accessToken = './access_token';
        if(!file_exists($this->accessToken)){
            $this->AccessTokenGet();
        }
    }
    /* 创建二维码 @param - $qrcodeID传递的参数，$qrcodeType二维码类型 默认为临时二维码 @return - 返回二维码图片地址
	
	https://developers.weixin.qq.com/doc/offiaccount/Account_Management/Generating_a_Parametric_QR_Code.html
	*/
    public function QrcodeCreate($qrcodeID, $qrcodeType = 1){
        if($qrcodeType ==0){
            $qrcodeType = 'QR_SCENE'; 
			  $tempJson = '{"expire_seconds": 1800, "action_name": "'.$qrcodeType.'", "action_info": {"scene": {"scene_id": '.$qrcodeID.'}}}';   
        }
		
		if($qrcodeType == 1){
            $qrcodeType = 'QR_LIMIT_SCENE';
			$tempJson = '{"action_name": "QR_LIMIT_STR_SCENE", "action_info": {"scene": {"scene_str": "'.$qrcodeID.'"}}}';
			
        }        
      
		
		
		//echo $tempJson;
		
		
		
	
	
		
		//echo $tempJson;
        $access_token = file_get_contents($this->accessToken);
        $url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=".$access_token;
        $tempArr = json_decode($this->JsonPost($url, $tempJson), true);
        if(@array_key_exists('ticket', $tempArr)){
            return 'https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket='.$tempArr['ticket'];
        }else{
            $this->ErrorLogger('qrcode create falied.');
            $this->AccessTokenGet();
            $this->QrcodeCreate();
        }
    }
    
    /* 从微信服务器获取access_token并写入配置文件 */
    private function AccessTokenGet(){
        $url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='.$this->appID.'&secret='.$this->appSecret;
        $tempArr = json_decode(file_get_contents($url), true);
        if(@array_key_exists('access_token', $tempArr)){            
            $tempWriter = fopen($this->accessToken, 'w');
            fwrite($tempWriter, $tempArr['access_token']);
        }else{
            $this->ErrorLogger('access_token get falied.');
            exit();
        }
    }
    /* 用户分组查询 */
    public function GroupsQuery(){
        $access_token = file_get_contents($this->accessToken);
        $url = 'https://api.weixin.qq.com/cgi-bin/groups/get?access_token='.$access_token;
        $tempArr = json_decode(file_get_contents($url), true);
        if(@array_key_exists('groups', $tempArr)){
            return $tempArr['groups']; //返回数组格式的分组信息
        }else{
            $this->ErrorLogger('groups query falied.');
            $this->AccessTokenGet();
            $this->GroupsQuery();
        }        
    }



    // 工具函数 //
    /* 使用curl来post一个json数据 */
    // CURLOPT_SSL_VERIFYPEER,CURLOPT_SSL_VERIFYHOST - 在做https中要用到
     // CURLOPT_RETURNTRANSFER - 不以文件流返回，带1
    private function JsonPost($url, $jsonData){
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($curl, CURLOPT_POST, 1);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $jsonData);
        curl_setopt($curl, CURLOPT_TIMEOUT, 30);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $result = curl_exec($curl);
        if (curl_errno($curl)) {
            $this->ErrorLogger('curl falied. Error Info: '.curl_error($curl));
        }
        curl_close($curl);
        return $result;
    }
    /* 错误日志记录 */
    private function ErrorLogger($errMsg){
        $logger = fopen('./ErrorLog.txt', 'a+');
        fwrite($logger, date('Y-m-d H:i:s')." Error Info : ".$errMsg."\r\n");
    }
}
?>


<img src="<?php echo $wechatObj->QrcodeCreate($xuejing);?>"  width="200" height="200"/>