Implement face recognition login function of WeChat applet through PHP-PHP Tutorial-php.cn

Implement face recognition login function of WeChat applet through PHP

jacklove

Release： 2023-04-01 17:48:02

Original

3177 people have browsed it

This article explains to you how to implement the facial recognition login function of WeChat applet based on PHP through example code. Interested friends can follow the editor of Script House to learn together

First of all, let’s confirm our Our personal information photos have been uploaded to Baidu Cloud Face Library

Then we write the face login interface in the background to log in. We need to store the photos obtained 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(&#39;jpg&#39;, &#39;gif&#39;, &#39;png&#39;, &#39;jpeg&#39;);// 设置附件上传类型 
   $upload->savepath = &#39;&#39;; 
   $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[&#39;file&#39;]); 
   if(!$info) {// 上传错误提示错误信息 
     echo json_encode(array(&#39;error&#39;=>true,&#39;msg&#39;=>$upload->getError()),JSON_UNESCAPED_UNICODE); 
   }else{// 上传成功 获取上传文件信息 
    $file = $dir . $info[&#39;savepath&#39;].$info[&#39;savename&#39;]; 
    $image = base64_encode(file_get_contents($file)); 
    $client = $this->init_face(); 
    $options[&#39;liveness_control&#39;] = &#39;NORMAL&#39;; 
    $options[&#39;max_user_num&#39;] = &#39;1&#39;; 
    $ret = $client->search($image,&#39;BASE64&#39;,&#39;student&#39;,$options); 
    // echo json_encode($ret,JSON_UNESCAPED_UNICODE); 
    // exit; 
    if($ret[&#39;error_code&#39;]==0){ 
     $user = $ret[&#39;result&#39;][&#39;user_list&#39;][0]; 
     $no = $user[&#39;user_id&#39;]; 
     $score = $user[&#39;score&#39;]; 
     if($score>=95){ 
      $data = M(&#39;student&#39;)->where("no = &#39;{$no}&#39;")->find(); 
      $data[&#39;score&#39;] = $score; 
      // $data[&#39;name&#39;] = json_decode($data[&#39;name&#39;],true); 
      // $data[&#39;sex&#39;] = json_decode($data[&#39;sex&#39;],true); 
      echo &#39;识别成功&#39; . json_encode($data,JSON_UNESCAPED_UNICODE); 
     }else{ 
      echo &#39;识别失败&#39; . $data[&#39;score&#39;]; 
     } 
    } 
   } 
  }

Copy after login

Then carry out front-end design

<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>

Copy after login

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, 
},

Copy after login

Call the interface in js

takePhoto() { 
   const ctx = wx.createCameraContext() 
   ctx.takePhoto({ 
    quality: &#39;high&#39;, 
    success: (res) => { 
     this.setData({ 
      src: res.tempImagePath 
     }) 
     console.log(res) 
     wx.uploadFile({ 
      url: &#39;&#39;, //仅为示例，非真实的接口地址 
      filePath: this.data.src, 
      name: &#39;file&#39;, 
      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

Swipe your face to log in successfully

Summary

The above is the PHP introduced by the editor to implement facial recognition and facial recognition login in the WeChat applet. I hope it will be helpful to everyone. If you have any questions, please Leave me a message and I will reply to you in time. I would also like to thank everyone for your support of the Script House website!

Articles you may be interested in:

PHP implements the function of preventing repeated submission of forms [based on token verification]

tp framework (thinkPHP) implements the example of locking the account after three incorrect login passwords

PHP implements the example of generating the data dictionary

The above is the detailed content of Implement face recognition login function of WeChat applet through PHP. For more information, please follow other related articles on the PHP Chinese website!