标签：try $path ade color ror enc exception padding sage
1.小程序调用生成二维码成功的时候，返回的是一个二维码图片的二进制文件流。
2.前端接受到图片的二进制的资源，拼接成
‘data:‘ . $mime . ‘;base64,‘base64_encode($wx_result)，
直接返回前端接收，前端再cavase绘图。
如果需要浏览器可以直接查看返回的二进制流，拼接成
<image src="‘data:‘ . $mime . ‘;base64,‘base64_encode($wx_result)" >,直接浏览器可以查看。
代码如下：
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/* * 生成活动分享页二维码*/ public function buildImgIndex() { try{ $unionid = post(‘unionid‘); $fileName = $unionid.‘.png‘; $fileData = WidRead($fileName); if($fileData){ echo $this->img_uri($fileData);exit; }else{ $TokenData = getAccessToken(); if($TokenData[‘code‘] == 200){ $accessToken = $TokenData[‘data‘][‘access_token‘]; }else{ echo jsonOut(returnArr(410,‘‘,‘error‘));exit; } $page = "pages/activityflower/activityflower"; $scene = "unionid=".$unionid; $path = "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=".$accessToken; $parameter = array( "access_token" => $accessToken, ‘scene‘ => $scene, //绑定该用户的unionid ‘page‘ => $page, ‘auto_color‘=>false, ‘width‘=>430 ); $parameter = json_encode($parameter); $curl = new \Curl\Curl(); $curl->setHeader(‘content-type‘,‘application/json; charset=utf-8‘); $curl->setOpt(CURLOPT_SSL_VERIFYPEER,false); $curl->setOpt(CURLOPT_SSL_VERIFYHOST,false); $curl->post($path,$parameter); if($curl->error){ $error_message = $curl->error_message; $error_code = $curl->error_code; $response = $curl->response_headers; $param[‘response‘] = $response; $param[‘code‘] = $error_code; $param[‘msg‘] = $error_message; $param[‘contents‘] = "coin connect error"; $curl->close(); echo jsonOut(returnArr(400,‘‘,‘‘)); }else{ $data = $curl->response; //返回图片文件流 $curl->close(); } $dataJson = json_decode($data);//如果成功返回文件流 json_decode为null,其他就自带微信的错误返回 if($dataJson == null){ WidWrite($fileName,$data); echo $this->img_uri($data);exit; }else{ echo jsonOut(returnArr(400,‘‘,‘‘));exit; } } }catch(\Exception $e){ $res = array("code" => $e->getCode(), ‘msg‘ => $e->getMessage()); echo jsonOut(returnArr(400, $res, ‘error‘));exit; } } /* * 二进制转图片image/png * */ public function img_uri($contents, $mime ="image/png") { $base64 = base64_encode($contents); return (‘data:‘ . $mime . ‘;base64,‘ . $base64); } |
标签：try $path ade color ror enc exception padding sage
原文地址：https://www.cnblogs.com/HelloLc/p/14186990.html
