小程序生成二维码

/*

* 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";

$scene ="union>.$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);

}