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這里給大家分享一下我在使用小程序時(shí)遇到的一個(gè)功能實(shí)現(xiàn)方法，生成二維碼，這里需要注意以下幾點(diǎn)： 1.小程序調(diào)用生成二維碼成功的時(shí)候，返回的是一個(gè)二維碼圖片的二進(jìn)制文件流。 'data:' . $mime . ';base64,'base64_encode($wx_result)， 如果需要瀏覽器可以直接查看返回的二進(jìn)制流，拼接成 <image src="'data:' . $mime . ';base64,'base64_encode($wx_result)" >,直接瀏覽器可以查看。 代碼如下： /*
* 生成活動(dòng)分享頁二維碼*/
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, //綁定該用戶的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; //返回圖片文件流
$curl->close();
}
$dataJson = json_decode($data);//如果成功返回文件流 json_decode為null,其他就自帶微信的錯(cuò)誤返回
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, $res, 'error'));exit;
}
}
/*
* 二進(jìn)制轉(zhuǎn)圖片image/png
* */
public function img_uri($contents, $mime ="image/png")
{
$base64 = base64_encode($contents);
return ('data:' . $mime . ';base64,' . $base64);
}
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