php之tp5保存將base64保存為圖片

public function uploads(){
        $logo_data = $this->request->post('logo_base64','');
        //$logo_data = $_POST['logo_base64'];
        
        if(!empty($logo_data)){
            //$data = file_get_contents('./1.txt');
            $reg = '/data:image\/(\w+?);base64,(.+)$/si';
            preg_match($reg,$logo_data,$match_result);

            $file_name = time().'.'.$match_result[1];
            
            $logo_path = WEB_PATH.'/uploads/logo/'.$file_name;
            $num = file_put_contents($logo_path,base64_decode($match_result[2]));
            
            
            if(!empty($num)){
                //上傳成功之后，再進行縮放操作
                //$image = \think\Image::open($logo_path);
                
                // 按照原圖的比例生成一個最大為150*150的縮略圖並保存為thumb.png
                //$image->thumb(102, 36)->save($logo_path);
                
                $result = ['code'=>200,'msg'=>'ok'];
            }else{
                $result = ['code'=>100,'msg'=>'no'];
            }
        }else{
            $result = ['code'=>100,'msg'=>'參數錯誤'];
        }
        return ajax($result);
    }