生成微信小程序分享二维码

1.微信小程序官方开放的二维码的接口，其中有一个是生成小程序二维码的，还有一个是圆形的小程序码，我这里就用php生成二维码。

完整代码：publicfunctionshare($product_id,$user_id){//首先要获取Access_token。注意：access_token只有2小时有效期，所以要缓存最好，避免重复请求$access_token="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".config('appid')."&secret=".config('secret');$json=$this-httpRequest($access_token);$json=json_decode($json,true);//width是二维码宽度$qcode="https://api.weixin.qq.com/wxa/getwxacode?access_token=".$json['access_token'];$param=json_encode(array("path"="/pages/public/product/product?id=".$product_id."&parent_id=".$user_id."&product_id=".$product_id,"width"=150));//path是小程序的落地页（小程序分享页面）后面可以带参数//POST参数$result=$this-httpRequest($qcode,$param,"POST");//生成二维码$file_name='/home/resource/'.time().rand(1000,9999).'.jpg';file_put_contents($file_name,$result);//$base64_image=base64_encode('data:image/png;base64'.$result);$qiniuConfig=config('qiniu');$auth=newAuth($qiniuConfig['accessKey'],$qiniuConfig['secretKey']);$key=time().rand(1000,9999).'.jpg';$upToken=$auth-uploadToken($qiniuConfig['merchantBucket'],$key,3600);//获取上传所需的toke$uploadMgr=newUploadManager();list($ret,$err)=$uploadMgr-putFile($upToken,$key,$file_name);if(empty($err)){unlink($file_name);//删除本地图片}else{returnDataReturnService::returnError(-1,'获取分享商品二维码失败',['']);}$ret['key']=$qiniuConfig['merchantDomain'].$ret['key'];returnDataReturnService::returnOk($ret,'获取分享商品二维码成功');}publicfunctionhttpRequest($url,$data='',$method='GET'){$curl=curl_init();curl_setopt($curl,CURLOPT_URL,$url);curl_setopt($curl,CURLOPT_SSL_VERIFYPEER,0);curl_setopt($curl,CURLOPT_SSL_VERIFYHOST,0);curl_setopt($curl,CURLOPT_USERAGENT,$_SERVER['HTTP_USER_AGENT']);curl_setopt($curl,CURLOPT_FOLLOWLOCATION,1);curl_setopt($curl,CURLOPT_AUTOREFERER,1);if($method=='POST'){curl_setopt($curl,CURLOPT_POST,1);if($data!=''){curl_setopt($curl,CURLOPT_POSTFIELDS,$data);}}curl_setopt($curl,CURLOPT_TIMEOUT,30);curl_setopt($curl,CURLOPT_HEADER,0);curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);$result=curl_exec($curl);curl_close($curl);return$result;}