微信小程序开发实现人脸检测功能

//获取access_token function request_post($url = '', $param = '') {   if (empty($url) || empty($param)) {     return false;   }      $postUrl = $url;   $curlPost = $param;   $curl = curl_init();//初始化curl   curl_setopt($curl, CURLOPT_URL,$postUrl);//抓取指定网页   curl_setopt($curl, CURLOPT_HEADER, 0);//设置header   curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);//要求结果为字符串且输出到屏幕上   curl_setopt($curl, CURLOPT_POST, 1);//post提交方式   curl_setopt($curl, CURLOPT_POSTFIELDS, $curlPost);   curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);   curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);   curl_setopt($curl, CURLOPT_SSLVERSION, 1);   $data = curl_exec($curl);//运行curl   curl_close($curl);      return $data; }  function access_token(){   $file= __DIR__ .'/access_token';   if(file_exists($file)){     $str=file_get_contents($file);     try{       $arr=json_decode($str,true);       if(is_array($arr)){         $totime=$arr['totime'];         if($totime>time()){           return $arr['access_token'];           exit;         }       }     }catch(Exception $e){      }   }    $url = 'https://aip.baidubce.com/oauth/2.0/token';   $post_data['grant_type'] = 'client_credentials';   $post_data['client_id'] = 'fRuY7eOPxBzIHf4qxiYeQOHT';   $post_data['client_secret'] = 'oe7L7aPc5rcKfSewvb5h6xFX2a8dEQN1';   $o = "";   foreach ( $post_data as $k => $v )    {     $o.= "$k=" . urlencode( $v ). "&" ;   }   $post_data = substr($o,0,-1);      $res = request_post($url, $post_data);    $arr=json_decode($res,true);   if(isset($arr['access_token']) && isset($arr['expires_in'])){     $data['access_token'] = $arr['access_token'];     $data['totime']= time() + $arr['expires_in'] - 86400;     file_put_contents($file, json_encode($data));     return $arr['access_token'];   }else{     return false;   }  } 

private function init_face(){     $App_ID = '用户appid';     $API_Key = '用户api_key';     $Secret_Key = '用户secret_key';      $dir = APP_PATH.'/face-sdk/';     require_once $dir."AipFace.php";     return new /AipFace($App_ID, $API_Key, $Secret_Key); }

// 人脸检测 public function facevalid(){     $file = './Upload/2018-05-17/1.png';     if (!file_exists($file)) {       die('文件不存在！');     }     $image = base64_encode(file_get_contents($file));     $imageType = 'BASE64';     //如果有可选参数     $options = array();     $options['max_face_num'] = 2;      $client = $this->init_face();     $ret = $client->detect($image,$imageType,$options);     // print_r($ret);     if ($ret['error_code'] == 0) {//有人脸       $result = $ret['result'];       $face_num = $result['face_num'];        if ($face_num==1) { //人脸数量为1         $face_probability = $result['face_list'][0]['face_probability'];         if ($face_probability==1) { //可靠性为1           $user_id = myguid();           $group_id = $this->face_group();           $res = $client->addUser($image,'BASE64',$group_id,$user_id);           // print_r($res);           if ($res['error_code']==0) {             echo "人脸检测完成，并入库";           }                   }else{           die('可靠性为：'.$face_probability);         }       }else{         die('人脸数大于1');       }     }else{       die('没有人脸');     }    }   // 获取组   private function face_group(){     $groupname = '10001';     $client = $this->init_face();     $ret = $client->getGroupList();     if ($ret['error_code'] == 0) {       $grouplist = $ret['result']['group_id_list'];       if (in_array($groupname, $grouplist)) {         return $groupname;       }else{         $ret = $client->groupAdd($groupname);         if ($ret['error_code'] == 0) {           return $groupname;         }else{           return false;         }       }     }else{       return false;     } }