How to use PHP to implement face recognition and facial login in WeChat mini program-PHP Tutorial-php.cn

How to use PHP to implement face recognition and facial login in WeChat mini program

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Release： 2023-03-28 09:34:01

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This time I will show you how to use PHP to implement facial recognition and facial recognition login for WeChat mini programs. What are the precautions , and the following is the actual combat. Let’s take a look at the case.

Then we write the face login interface in the background to log in. We need to store the photos taken by taking photos to the server.

public function login(){ 
   // 上传文件路径 
   $dir = "./Uploads/temp/"; 
   if(!file_exists($dir)){ 
    mkdir($dir,0777,true); 
   } 
   $upload = new \Think\Upload(); 
   $upload->maxSize = 2048000 ;// 设置附件上传大小 
   $upload->exts = array('jpg', 'gif', 'png', 'jpeg');// 设置附件上传类型 
   $upload->savepath = ''; 
   $upload->autoSub = false; 
   $upload->rootPath = $dir; // 设置附件上传根目录 
   // 上传单个文件 
   $info = $upload->uploadOne($_FILES['file']); 
   if(!$info) {// 上传错误提示错误信息 
     echo json_encode(array('error'=>true,'msg'=>$upload->getError()),JSON_UNESCAPED_UNICODE); 
   }else{// 上传成功 获取上传文件信息 
    $file = $dir . $info['savepath'].$info['savename']; 
    $image = base64_encode(file_get_contents($file)); 
    $client = $this->init_face(); 
    $options['liveness_control'] = 'NORMAL'; 
    $options['max_user_num'] = '1'; 
    $ret = $client->search($image,'BASE64','student',$options); 
    // echo json_encode($ret,JSON_UNESCAPED_UNICODE); 
    // exit; 
    if($ret['error_code']==0){ 
     $user = $ret['result']['user_list'][0]; 
     $no = $user['user_id']; 
     $score = $user['score']; 
     if($score>=95){ 
      $data = M('student')->where("no = '{$no}'")->find(); 
      $data['score'] = $score; 
      // $data['name'] = json_decode($data['name'],true); 
      // $data['sex'] = json_decode($data['sex'],true); 
      echo '识别成功' . json_encode($data,JSON_UNESCAPED_UNICODE); 
     }else{ 
      echo '识别失败' . $data['score']; 
     } 
    } 
   } 
  }

Copy after login

Then we design the front desk.

<camera device-position="{{device?&#39;back&#39;:&#39;front&#39;}}" flash="off" binderror="error" style="width: 100%; height: 300px;"></camera> 
    <view class="weui-cellstitle" >开关</view> 
    <view class="weui-cells weui-cells_after-title"> 
      <view class="weui-cell weui-cell_switch"> 
        <view class="weui-cellbd">切换摄像头</view> 
        <view class="weui-cellft" > 
          <switch bindtap="devicePosition" /> 
        </view> 
      </view> 
    </view> 
<button type="primary" bindtap="takePhoto">刷脸登录</button>

Copy after login

We can also control the camera. Before and after shots

devicePosition() { 
this.setData({ 
 device: !this.data.device, 
}) 
console.log("当前相机摄像头为:", this.data.device ? "后置" : "前置"); 
camera() { 
 let { ctx, type, startRecord } = this.data; }, 
data: { 
 src: null, 
},

Copy after login

Calling the interface in js

takePhoto() { 
   const ctx = wx.createCameraContext() 
   ctx.takePhoto({ 
    quality: 'high', 
    success: (res) => { 
     this.setData({ 
      src: res.tempImagePath 
     }) 
     console.log(res) 
     wx.uploadFile({ 
      url: '', //仅为示例，非真实的接口地址 
      filePath: this.data.src, 
      name: 'file', 
      formData: { 
      }, 
      success: function (res) { 
       // var data = res.data 
       // var json = JSON.parse(data) 
       console.log(res) 
       wx.showModal({ 
        title: "提示", 
        content: res.data, 
        showCancel: false, 
        confirmText: "确定" 
       }) 
      } 
     }) 
    } 
   }) 
  },

Copy after login

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!