How to use php to call the camera to implement the camera function

The merchant backend I recently built needed to implement the function of calling the camera to take photos of users checking in. I searched for information and researched it. Finally, Huang Tian paid off and succeeded. I will post the code step by step below, hoping it will be helpful.

The code is a bit much, but each step is easy to understand. The first is the HTML code. Write a form. When the time comes to upload the image, ajax will submit it asynchronously. There is no need to introduce other js. There is a method in h5 that can be directly adjusted. Get the media device.

However, it should be noted that for many browsers such as Google, QQ, 360, etc., due to security reasons, websites without HTTPS protocols are considered unsafe. Therefore, if you cannot retrieve them, you must remember to apply to the website. HTTPS certificate, installed on the server

During the testing period, their browser turned off the flash and camera equipment by default, and could not open it. I searched for various entrances, but there was no check-in button. Finally, I tried Try Firefox, Firefox can be retrieved, so it is recommended to use Firefox browser for development during the test phase

Requirements:

The photo and the photo must be taken in the same position, after taking the photo In the future, the video box will display the photo. If you want to retake, click the Activate Camera button. The video box will be displayed and the photo will be hidden. Then click Shoot. If the shooting is successful, click Upload.

The camera is successfully called, as shown in the video box with a progress bar as shown below:

Click to take a photo, the shooting is successful, and the activation of the camera will be displayed on the left Button, actually don’t click to activate the camera. If you are not satisfied and click to take a picture, you can take a picture, but you can’t see what it looks like, as shown in the picture:

The shooting is completed. Click Upload to upload to the background for data operations.

Style file:

.coach-price{display: none}
.input-but{display: inline-flex;}
#canvas{display: none}
#showVideo{display: none}
#input-picture{width:100%;}
HTML代码：

    

        
打卡头像
    
    

        

            

                

                    
                    
                    //这是一个画布的容器
                    
                
            
            

                 //要拍照的视频框
                
            
            

               //各种按钮
                

                    
                        激活摄像头
                    
                    
                        拍照
                    
                    
                        上传
                    
                
            
        
    

JS code:

Submit to the background, PHP processes it, and the framework used is tp5 , so it is very convenient to directly use the success and error of tp when returning later. Its first parameter is msg, the second is the URL, and the third is data.

 public function upPicture(){
        $image_code = input('image_code');
        if(empty($image_code)){
            $this ->error('照片为空');
        }
        $uId = input('userId');
       //处理接收过来的图片
        $img = str_replace('data:image/png;base64,', '', $image_code);
        $img = str_replace(' ', '+', $img);
        $data = base64_decode($img);
       // 图片名称
        $file_name = "./uploads/head/".time().".png";
        $fp = fopen($file_name, 'w');
        fwrite($fp, $data);
        fclose($fp);
        $array = array(
            "picture" => substr($file_name,1)
        );
       $res =  Db::table("table")->where("userId",$uId)->setField($array);
       if($res){
           $this ->success('编辑成功！');
       }else{
           $this ->error('编辑失败，请刷新重试！');
       }
    }

Related recommendations: "PHP Tutorial"

The above is the detailed content of How to use php to call the camera to implement the camera function. For more information, please follow other related articles on the PHP Chinese website!