PHP realizes wechat applet face recognition and face brushing login function

First, we confirm that our personal information photos have been uploaded in our Baidu cloud face database

Then we write the interface of face brushing login in the background login We need to store the photos taken to the server

public function login(){ 
   //  Upload file path  
   $dir = "./Uploads/temp/"; 
   if(!file_exists($dir)){ 
    mkdir($dir,0777,true); 
   } 
   $upload = new \Think\Upload(); 
   $upload->maxSize = 2048000 ;//  Set attachment upload size  
   $upload->exts = array('jpg', 'gif', 'png', 'jpeg');//  Set attachment upload type  
   $upload->savepath = ''; 
   $upload->autoSub = false; 
   $upload->rootPath = $dir; //  Set the attachment upload root  
   //  Upload a single file  
   $info = $upload->uploadOne($_FILES['file']); 
   if(!$info) {
                            //  Upload error message  
     echo json_encode(array('error'=>true,'msg'=>$upload->getError()),JSON_UNESCAPED_UNICODE); 
   }else{
                                   //  Upload successful   Get upload file information  
    $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 ' Recognition success ' . json_encode($data,JSON_UNESCAPED_UNICODE); 
     }else{ 
      echo ' Recognition failed ' . $data['score']; 
     } 
    } 
   } 
  }

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Then carry out the front desk design

<camera device-position="{
       {device?'back':'front'}}" flash="off" binderror="error" style="width: 100%; height: 300px;"></camera> 
    <view class="weui-cells__title" > switch </view> 
    <view class="weui-cells weui-cells_after-title"> 
      <view class="weui-cell weui-cell_switch"> 
        <view class="weui-cell__bd"> Switch cameras </view> 
        <view class="weui-cell__ft" > 
          <switch bindtap="devicePosition" /> 
        </view> 
      </view> 
    </view> 
<button type="primary" bindtap="takePhoto"> Swipe your face and log in </button>

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We can also control the front and rear lenses of the camera

devicePosition() { 
this.setData({ 
 device: !this.data.device, 
}) 
console.log(" The current camera is :", this.data.device ? " After " : " In front of "); 
camera() { 
 let { ctx, type, startRecord } = this.data; }, 
data: { 
 src: null, 
},

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stay js It calls the interface

takePhoto() { 
   const ctx = wx.createCameraContext() 
   ctx.takePhoto({ 
    quality: 'high', 
    success: (res) => { 
     this.setData({ 
      src: res.tempImagePath 
     }) 
     console.log(res) 
     wx.uploadFile({ 
      url: '', // Just for the sample , Unreal interface address  
      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: " Tips ", 
        content: res.data, 
        showCancel: false, 
        confirmText: " determine "
       }) 
      } 
     }) 
    } 
   }) 
  },

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You can log in successfully by brushing your face

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