微信开发之 二维码生成类库

最近weiphp 二次开真的有点累，漏洞百出。代码维护代价有点高。

<?php
/**
 * Created by PhpStorm.
 * User: bin
 * Date: 15-1-16
 * Time: 上午9:48
 */
namespace Home\Common;

// 微信处理类
set_time_limit(30);
class Weixin{
    //构造方法
    static $qrcode_url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?";
    static $token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&";
    static $qrcode_get_url = "https://mp.weixin.qq.com/cgi-bin/showqrcode?";

    //生成二维码
    public function getEwm($wechatid,$fqid,$type = 1){
        $wechat = M(\'Member_public\')->where(array(\'id\'=> $wechatid))->find();
        $appid = $wechat[\'appid\'];
        $secret = $wechat[\'secret\'];
        $ACCESS_TOKEN = $this->getToken($appid,$secret);
        $url = $this->getQrcodeurl($ACCESS_TOKEN,$fqid,1);
        return DownLoadQr($url,time());
    }
    protected function getQrcodeurl($ACCESS_TOKEN,$fqid,$type = 1){
        $url = self::$qrcode_url.\'access_token=\'.$ACCESS_TOKEN;
        if($type == 1){
            //生成永久二维码
            $qrcode=  \'{"action_name": "QR_LIMIT_SCENE", "action_info": {"scene": {"scene_id": \'.$fqid.\'}}}\';
        }else{
            //生成临时二维码
            $qrcode = \'{"expire_seconds": 1800, "action_name": "QR_SCENE", "action_info": {"scene": {"scene_id": \'.$fqid.\'}}}\';
        }
        $result = $this->http_post_data($url,$qrcode);
        $oo = json_decode($result[1]);
        if(!$oo->ticket){
            $this->ErrorLogger(\'getQrcodeurl falied. Error Info: getQrcodeurl get failed\');
            exit();
        }
        $url = self::$qrcode_get_url.\'ticket=\'.$oo->ticket.\'\';
        return $url;

    }

    protected function getToken($appid,$secret){
        $ACCESS_TOKEN = file_get_contents(self::$token_url."appid=$appid&secret=$secret");
        $ACCESS_TOKEN = json_decode($ACCESS_TOKEN);
        $ACCESS_TOKEN = $ACCESS_TOKEN->access_token;
        return $ACCESS_TOKEN;
    }
    protected function http_post_data($url, $data_string) {

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
                \'Content-Type: application/json; charset=utf-8\',
                \'Content-Length: \' . strlen($data_string))
        );
        ob_start();
        curl_exec($ch);
        if (curl_errno($ch)) {
            $this->ErrorLogger(\'curl falied. Error Info: \'.curl_error($ch));
        }
        $return_content = ob_get_contents();
        ob_end_clean();
        $return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        return array($return_code, $return_content);
    }
    //下载二维码到服务器
    protected function DownLoadQr($url,$filestring){
        if($url == ""){
            return false;
        }
        $filename = $filestring.\'.jpg\';
        ob_start();
        readfile($url);
        $img=ob_get_contents();
        ob_end_clean();
        $size=strlen($img);
        $fp2=fopen(\'./Uploads/qrcode/\'.$filename,"a");
        if(fwrite($fp2,$img) === false){
            $this->ErrorLogger(\'dolwload image falied. Error Info: 无法写入图片\');
            exit();
        }
        fclose($fp2);
        return \'./Uploads/qrcode/\'.$filename;
    }

    private function ErrorLogger($errMsg){
        $logger = fopen(\'./ErrorLog.txt\', \'a+\');
        fwrite($logger, date(\'Y-m-d H:i:s\')." Error Info : ".$errMsg."\r\n");
    }

}