PHP implements face recognition and face-swiping login function of WeChat applet

This article explains to you how to implement the facial recognition login function of WeChat applet based on PHP through example code. Friends who are interested can learn together.

First of all, let’s confirm our Baidu Cloud face library We have uploaded our personal information photos

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']; 
     } 
    } 
   } 
  }

Then 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-cells__title" >开关</view> 
    <view class="weui-cells weui-cells_after-title"> 
      <view class="weui-cell weui-cell_switch"> 
        <view class="weui-cell__bd">切换摄像头</view> 
        <view class="weui-cell__ft" > 
          <switch bindtap="devicePosition" /> 
        </view> 
      </view> 
    </view> 
<button type="primary" bindtap="takePhoto">刷脸登录</button>

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

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, 
},

Call 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" 
       }) 
      } 
     }) 
    } 
   }) 
  },

Swipe your face to log in successfully

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